PT-Style Screws | McMaster-Carr

Filter by

Screw Size

Length

For Use In

Drive Style

Fastener Head Type

Material

Rounded Head Style

Drive Size

Drill Bit Size

Drill Bit Decimal Size Equivalent

Approximate Thread Pitch

REACH

RoHS

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Rounded Head Profile

Flange Diameter

344 Products

About Tapping Screws

Compare drilling, pointed, thread-forming, and thread-cutting tips to find the best choice for your material.

Fastener Head Type

Rounded

The most common head type creates a finished look

291 products

Flat

Sit neatly in countersunk holes for a flush finish

53 products

Fastener Head Type

Flanged

Distribute pressure evenly to prevent damaging material

49 products

Performance

Corrosion Resistant

Won't rust in wet and outdoor environments

151 products

Steel Torx Plus Rounded Head Thread-Forming Screws for Thin-Walled Holes in Plastic

Thread these screws into thin-walled holes without damaging the drive or your workpiece. The deep, six-lobe recess withstands more torque than a Torx drive to prevent slipping. These screws have narrow-angle threads that prevent cracking and discoloration in molded plastics, such as ABS, PVC, and polycarbonate. The rounded head creates a finished look.

Length is measured from under the head.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

		Head, mm
	Lg., mm	Dia.	Ht.	Tapping Screw Type	Drive Size	Drill Bit Size	Shank Cross Section	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M1 Screw Size

				2	1.875	0.8	TRS	IP2, T2	67 Ga.	Round	25	96817A007	000000


				3	1.875	0.8	TRS	IP2, T2	67 Ga.	Round	25	96817A009	00000
				4	1.875	0.8	TRS	IP2, T2	67 Ga.	Round	25	96817A011	00000




						M1.2 Screw Size

						2	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A031	00000


						3	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A034	00000
						4	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A036	00000
						5	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A039	00000




								M1.4 Screw Size

								3	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A082	0000


								4	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A085	0000
								5	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A088	0000
								6	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A090	0000




										M1.6 Screw Size

										3	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A110	0000


										4	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A113	0000
										5	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A115	0000
										6	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A118	0000




												M1.8 Screw Size

												4	3.05	1.35	TRS	IP6, T6	54 Ga.	Round	25	96817A152	0000


												5	3.05	1.35	TRS	IP6, T6	54 Ga.	Round	25	96817A154	0000
												6	3.05	1.35	TRS	IP6, T6	54 Ga.	Round	25	96817A156	0000




	M2 Screw Size

	3												3.35	1.6	TRS	IP6, T6	52 Ga.	Round	25	96817A201	0000


	4	3.35											1.6	TRS	IP6, T6	52 Ga.	Round	25	96817A204	0000
	5	3.35	1.6										TRS	IP6, T6	52 Ga.	Round	25	96817A207	0000
	6	3.35	1.6										TRS	IP6, T6	52 Ga.	Round	25	96817A209	0000
	8	3.35	1.6										TRS	IP6, T6	52 Ga.	Round	25	96817A212	0000




			M2.2 Screw Size

			4										3.75	1.6	TRS	IP6, T6	50 Ga.	Round	25	96817A218	0000


			5	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A219	0000
			6	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A220	0000
			8	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A240	0000
			10	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A260	0000




					M2.5 Screw Size

					5								4.25	1.9	TRS	IP8, T8	45 Ga.	Round	25	96817A263	0000


					6	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A265	0000
					8	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A268	0000
					10	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A271	0000
					12	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A274	0000




							M3 Screw Size

							5						5.15	2.3	TRS	IP10, T10	41 Ga.	Round	25	96817A300	0000


							6	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A310	0000
							8	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A330	0000
							10	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A350	0000
							12	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A370	0000




									M3.5 Screw Size

									6				5.92	2.7	TRS	IP15, T15	34 Ga.	Round	25	96817A420	0000


									10	5.92	2.7		TRS	IP15, T15	34 Ga.	Round	25	96817A440	0000
									12	5.92	2.7		TRS	IP15, T15	34 Ga.	Round	25	96817A460	0000




M4 Screw Size

8											6.82		3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A500	0000


10											6.82	3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A510	0000
12											6.82	3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A520	0000
14											6.82	3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A522	00000




												M4.5 Screw Size

	8	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A541	0000


	10	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A544	0000
	12	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A547	00000
	14	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A552	00000




												M5 Screw Size

			10									8.62	3.5	TRS	IP25, T25	21 Ga.	Round	25	96817A620	00000


			12	8.62								3.5	TRS	IP25, T25	21 Ga.	Round	25	96817A640	00000




												M6 Screw Size

												12	10.5	4.35	TRS	IP30, T30	12 Ga.	Round	25	96817A663	00000


					14							10.5	4.35	TRS	IP30, T30	12 Ga.	Round	25	96817A668	00000

Stainless Steel Phillips Rounded Head Thread-Forming Screws for Plastic

Round

Shank

Cross

Section

Our most popular thread-forming screws for plastic also resist rust. Thread them directly into molded or cast holes—no inserts needed. Screws won’t crack or distort material when fastening enclosures, panels, and other plastic components. The Phillips drive handles enough torque to keep drivers from slipping and the rounded head creates a finished look.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Round—The sharply angled threads drive into plastic with less force and a lower risk of cracking than other tapping screws. The base of the threads is recessed to bite deep into material and hold tight. You can reuse these screws a few times without stripping the threads. They're comparable to PT screws.

		Head, mm
	Lg., mm	Dia.	Ht.	Tapping Screw Type	Drive Size	Drill Bit Size	Shank Cross Section	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				M1.6 Screw Size

				5	2.6	1.1	TRS	No. 0	55 Ga.	Round	25	99461A911	00000


				6	2.6	1.1	TRS	No. 0	55 Ga.	Round	25	99461A912	0000
				8	2.6	1.1	TRS	No. 0	55 Ga.	Round	25	99461A913	0000




						M2 Screw Size

						5	3.5	1.4	TRS	No. 1	52 Ga.	Round	25	99461A914	0000


						6	3.5	1.4	TRS	No. 1	52 Ga.	Round	25	99461A915	0000
						8	3.5	1.4	TRS	No. 1	52 Ga.	Round	25	99461A916	0000
						10	3.5	1.4	TRS	No. 1	52 Ga.	Round	25	99461A917	0000




								M2.2 Screw Size

								4	3.9	1.6	TRS	No. 1	50 Ga.	Round	50	99461A918	0000


								5	3.9	1.6	TRS	No. 1	50 Ga.	Round	100	99461A919	00000
								6	3.9	1.6	TRS	No. 1	50 Ga.	Round	100	99461A921	00000
								8	3.9	1.6	TRS	No. 1	50 Ga.	Round	50	99461A922	0000
								10	3.9	1.6	TRS	No. 1	50 Ga.	Round	100	99461A923	00000
								12	3.9	1.6	TRS	No. 1	50 Ga.	Round	100	99461A924	00000
								14	3.9	1.6	TRS	No. 1	50 Ga.	Round	100	99461A925	00000
								16	3.9	1.6	TRS	No. 1	50 Ga.	Round	100	99461A926	00000
								18	3.9	1.6	TRS	No. 1	50 Ga.	Round	50	99461A927	00000




										M2.5 Screw Size

										5	4.4	1.8	TRS	No. 1	45 Ga.	Round	100	99461A928	00000


										6	4.4	1.8	TRS	No. 1	45 Ga.	Round	100	99461A929	00000
										8	4.4	1.8	TRS	No. 1	45 Ga.	Round	100	99461A931	00000
										10	4.4	1.8	TRS	No. 1	45 Ga.	Round	50	99461A932	0000
										12	4.4	1.8	TRS	No. 1	45 Ga.	Round	50	99461A933	0000
										14	4.4	1.8	TRS	No. 1	45 Ga.	Round	50	99461A934	0000
										16	4.4	1.8	TRS	No. 1	45 Ga.	Round	50	99461A935	0000
										18	4.4	1.8	TRS	No. 1	45 Ga.	Round	50	99461A936	0000
										20	4.4	1.8	TRS	No. 1	45 Ga.	Round	50	99461A937	00000




M3 Screw Size

5	5.3											2.1	TRS	No. 1	41 Ga.	Round	50	99461A938	0000


6	5.3											2.1	TRS	No. 1	41 Ga.	Round	100	99461A939	00000
8	5.3	2.1										TRS	No. 1	41 Ga.	Round	50	99461A941	0000
10	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A942	0000
12	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A943	0000
14	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A944	0000
16	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A945	0000
18	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A946	00000
20	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A947	00000
25	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A948	00000
30	5.3	2.1	TRS									No. 1	41 Ga.	Round	50	99461A949	00000




		M3.5 Screw Size

		8	6.1	2.6	TRS							No. 1	34 Ga.	Round	50	99461A951	0000


		10	6.1	2.6	TRS							No. 1	34 Ga.	Round	50	99461A952	0000
		12	6.1	2.6	TRS							No. 1	34 Ga.	Round	50	99461A953	0000
		14	6.1	2.6	TRS							No. 1	34 Ga.	Round	50	99461A954	0000
		16	6.1	2.6	TRS							No. 1	34 Ga.	Round	50	99461A955	00000
		18	6.1	2.6	TRS							No. 1	34 Ga.	Round	50	99461A956	00000
		20	6.1	2.6	TRS							No. 1	34 Ga.	Round	50	99461A957	00000
		25	6.1	2.6	TRS	No. 1						34 Ga.	Round	50	99461A958	00000
		30	6.1	2.6	TRS	No. 1	34 Ga.					Round	25	99461A959	0000
		35	6.1	2.6	TRS	No. 1	34 Ga.					Round	25	99461A961	0000




				M4 Screw Size

				5	7	2.8	TRS					No. 1	30 Ga.	Round	25	99461A962	0000


				6	7	2.8	TRS					No. 1	30 Ga.	Round	25	99461A963	0000
				8	7	2.8	TRS					No. 1	30 Ga.	Round	50	99461A964	0000
				10	7	2.8	TRS					No. 1	30 Ga.	Round	50	99461A965	0000
				12	7	2.8	TRS					No. 1	30 Ga.	Round	50	99461A966	00000
				14	7	2.8	TRS					No. 1	30 Ga.	Round	50	99461A967	00000
				16	7	2.8	TRS					No. 1	30 Ga.	Round	50	99461A968	00000
				18	7	2.8	TRS	No. 1				30 Ga.	Round	50	99461A969	00000
				20	7	2.8	TRS	No. 1	30 Ga.			Round	25	99461A971	0000
				25	7	2.8	TRS	No. 1	30 Ga.			Round	25	99461A972	0000
				30	7	2.8	TRS	No. 1	30 Ga.			Round	25	99461A973	0000


				35	7	2.8	TRS	No. 1	30 Ga.			Round	25	99461A974	00000
				40	7	2.8	TRS	No. 1	30 Ga.			Round	10	99461A975	0000




						M5 Screw Size

						8	8.8	3.32	TRS			No. 2	21 Ga.	Round	25	99461A976	00000


						10	8.8	3.32	TRS			No. 2	21 Ga.	Round	25	99461A977	00000
						12	8.8	3.32	TRS	No. 2		21 Ga.	Round	25	99461A978	00000
						14	8.8	3.32	TRS	No. 2	21 Ga.	Round	25	99461A979	00000
						16	8.8	3.32	TRS	No. 2	21 Ga.	Round	10	99461A981	0000
						18	8.8	3.32	TRS	No. 2	21 Ga.	Round	10	99461A982	0000
						20	8.8	3.32	TRS	No. 2	21 Ga.	Round	10	99461A983	0000
						25	8.8	3.32	TRS	No. 2	21 Ga.	Round	10	99461A984	0000
						30	8.8	3.32	TRS	No. 2	21 Ga.	Round	10	99461A985	0000

Steel Torx Flanged Rounded Head Thread-Forming Screws for Thin-Walled Holes in Plastic

With a flange under the head, these screws distribute pressure to prevent denting or pulling through holes in thin plastic. Their threads have a narrow angle to drive into drive into ABS, PVC, and polycarbonate without cracking or discoloring the material. The Torx drive ensures a good grip with less slip than slotted, Phillips, square, or hex drives. These screws have a rounded head to create a finished look.

Length is measured from under the head.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	Lg., mm	Head Ht., mm	Flange Dia., mm	Tapping Screw Type	Drive Size	Drill Bit Size	Shank Cross Section	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M2 Screw Size

				4	1.3	4	TRS	T6	58 Ga.	Round	25	96817A311	00000


				6	1.3	4	TRS	T6	58 Ga.	Round	25	96817A312	0000
				8	1.3	4	TRS	T6	58 Ga.	Round	25	96817A313	0000




						M2.2 Screw Size

						4	1.4	4.5	TRS	T6	56 Ga.	Round	25	96817A314	0000


						6	1.4	4.5	TRS	T6	56 Ga.	Round	25	96817A315	0000




								M2.5 Screw Size

								6	1.5	5	TRS	T6	54 Ga.	Round	50	96817A317	00000


								8	1.5	5	TRS	T6	54 Ga.	Round	50	96817A318	00000
								10	1.5	5	TRS	T6	54 Ga.	Round	50	96817A319	00000




										M3 Screw Size

										8	2.1	6	TRS	T10	52 Ga.	Round	100	96817A321	00000


										10	2.1	6	TRS	T10	52 Ga.	Round	100	96817A322	00000
										12	2.1	6	TRS	T10	52 Ga.	Round	100	96817A323	00000




												M3.5 Screw Size

												8	2.4	7	TRS	T10	50 Ga.	Round	100	96817A324	00000


												10	2.4	7	TRS	T10	50 Ga.	Round	100	96817A325	00000
												12	2.4	7	TRS	T10	50 Ga.	Round	50	96817A326	0000




														M4 Screw Size

														10	2.6	8	TRS	T20	45 Ga.	Round	50	96817A327	0000


12	2.6													8	TRS	T20	45 Ga.	Round	50	96817A328	0000
16	2.6													8	TRS	T20	45 Ga.	Round	50	96817A329	0000




		M5 Screw Size

		10	3.3											10	TRS	T20	38 Ga.	Round	50	96817A331	00000


		12	3.3											10	TRS	T20	38 Ga.	Round	50	96817A332	00000

Steel Phillips Rounded Head Thread-Forming Screws for Plastic

Round

Shank

Cross

Section

Thread these screws into molded or cast holes in plastic without installing inserts. They won’t crack or distort material when fastening enclosures, panels, and other plastic components. The Phillips drive handles enough torque to keep drivers from slipping and the rounded head creates a finished look.

Length is measured from under the head.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

		Head, mm
	Lg., mm	Dia.	Ht.	Tapping Screw Type	Drive Size	Drill Bit Size, mm	Shank Cross Section	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M1.6 Screw Size

				4	2.6	1.1	TRS	No. 0	1.2	Round	25	90380A321	00000


				5	2.6	1.1	TRS	No. 0	1.2	Round	50	90380A322	0000
				6	2.6	1.1	TRS	No. 0	1.2	Round	50	90380A323	0000




						M2 Screw Size

						4	3.5	1.4	TRS	No. 1	1.5	Round	25	90380A324	0000


						5	3.5	1.4	TRS	No. 1	1.5	Round	50	90380A325	0000
						6	3.5	1.4	TRS	No. 1	1.5	Round	50	90380A326	0000
						8	3.5	1.4	TRS	No. 1	1.5	Round	100	90380A327	0000
						10	3.5	1.4	TRS	No. 1	1.5	Round	50	90380A328	0000




								M2.2 Screw Size

								5	3.9	1.6	TRS	No. 1	1.65	Round	100	90380A329	0000


								6	3.9	1.6	TRS	No. 1	1.65	Round	100	90380A331	00000
								8	3.9	1.6	TRS	No. 1	1.65	Round	100	90380A332	0000
								10	3.9	1.6	TRS	No. 1	1.65	Round	100	90380A333	0000
								12	3.9	1.6	TRS	No. 1	1.65	Round	100	90380A334	0000
								14	3.9	1.6	TRS	No. 1	1.65	Round	100	90380A335	0000
								16	3.9	1.6	TRS	No. 1	1.65	Round	100	90380A336	0000




										M2.5 Screw Size

										5	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A337	0000


										6	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A338	0000
										8	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A339	0000
										10	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A341	0000
										12	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A342	0000
										14	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A343	00000
										16	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A344	0000
										18	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A345	00000
										20	4.4	1.8	TRS	No. 1	1.85	Round	100	90380A346	00000




												M3 Screw Size

5	5.3											2.1	TRS	No. 1	2.25	Round	100	90380A347	0000


6	5.3											2.1	TRS	No. 1	2.25	Round	100	90380A348	0000
8	5.3	2.1										TRS	No. 1	2.25	Round	100	90380A349	0000
10	5.3	2.1	TRS									No. 1	2.25	Round	100	90380A351	0000
12	5.3	2.1	TRS									No. 1	2.25	Round	100	90380A352	0000
14	5.3	2.1	TRS									No. 1	2.25	Round	100	90380A353	0000
16	5.3	2.1	TRS									No. 1	2.25	Round	100	90380A354	00000
18	5.3	2.1	TRS									No. 1	2.25	Round	100	90380A355	0000
20	5.3	2.1	TRS									No. 1	2.25	Round	100	90380A356	0000
25	5.3	2.1	TRS									No. 1	2.25	Round	50	90380A357	0000
30	5.3	2.1	TRS									No. 1	2.25	Round	50	90380A358	0000




		M3.5 Screw Size

		5	6.1	2.6	TRS							No. 2	2.6	Round	100	90380A359	0000


		6	6.1	2.6	TRS							No. 2	2.6	Round	100	90380A361	0000
		8	6.1	2.6	TRS							No. 2	2.6	Round	50	90380A362	0000
		10	6.1	2.6	TRS							No. 2	2.6	Round	100	90380A363	00000
		12	6.1	2.6	TRS							No. 2	2.6	Round	50	90380A364	0000
		14	6.1	2.6	TRS							No. 2	2.6	Round	50	90380A365	0000
		16	6.1	2.6	TRS							No. 2	2.6	Round	50	90380A366	0000
		18	6.1	2.6	TRS							No. 2	2.6	Round	50	90380A367	0000
		20	6.1	2.6	TRS	No. 2						2.6	Round	50	90380A368	0000
		25	6.1	2.6	TRS	No. 2	2.6					Round	50	90380A369	0000
		30	6.1	2.6	TRS	No. 2	2.6					Round	50	90380A371	0000


		35	6.1	2.6	TRS	No. 2	2.6					Round	50	90380A372	0000




				M4 Screw Size

				5	7	2.8	TRS					No. 2	3	Round	100	90380A373	0000


				6	7	2.8	TRS					No. 2	3	Round	100	90380A374	0000
				8	7	2.8	TRS	No. 2				3	Round	100	90380A375	0000
				10	7	2.8	TRS	No. 2	3			Round	50	90380A376	0000
				12	7	2.8	TRS	No. 2	3			Round	50	90380A377	0000
				14	7	2.8	TRS	No. 2	3			Round	50	90380A378	0000
				16	7	2.8	TRS	No. 2	3			Round	50	90380A379	0000
				18	7	2.8	TRS	No. 2	3			Round	50	90380A381	0000
				20	7	2.8	TRS	No. 2	3			Round	50	90380A382	0000
				25	7	2.8	TRS	No. 2	3			Round	50	90380A383	0000
				30	7	2.8	TRS	No. 2	3			Round	50	90380A384	0000


				35	7	2.8	TRS	No. 2	3			Round	50	90380A385	0000




						M5 Screw Size

						8	8.8	3.32	TRS	No. 2		3.75	Round	50	90380A386	0000


						10	8.8	3.32	TRS	No. 2	3.75	Round	50	90380A387	0000
						12	8.8	3.32	TRS	No. 2	3.75	Round	50	90380A388	0000
						14	8.8	3.32	TRS	No. 2	3.75	Round	50	90380A389	0000
						16	8.8	3.32	TRS	No. 2	3.75	Round	50	90380A391	0000
						18	8.8	3.32	TRS	No. 2	3.75	Round	50	90380A392	00000
						20	8.8	3.32	TRS	No. 2	3.75	Round	50	90380A393	00000
						25	8.8	3.32	TRS	No. 2	3.75	Round	25	90380A394	0000
						30	8.8	3.32	TRS	No. 2	3.75	Round	25	90380A395	0000

Stainless Steel Torx Flanged Rounded Head Thread-Forming Screws for Thin-Walled Holes in Plastic

These corrosion-resistant screws have a flange under the head to distribute pressure and prevent denting or pulling through thin plastic. Their narrow-angle threads drive into ABS, PVC, and polycarbonate without cracking or discoloring the material. The Torx drive ensures a good grip with less slip than slotted, Phillips, square, or hex drives. These screws have a rounded head to create a finished look.

Length is measured from under the flange.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	Head Ht., mm	Flange Dia., mm	Tapping Screw Type	Drive Size	Drill Bit Size	Shank Cross Section	Pkg. Qty.		Pkg.
18-8 Stainless Steel







			M1.6 Screw Size

			5	1.3	3.6	TRS	T5	56 Ga.	Round	25	96817A401	00000


			6	1.3	3.6	TRS	T5	56 Ga.	Round	25	96817A402	0000
			8	1.3	3.6	TRS	T5	56 Ga.	Round	25	96817A403	0000




					M2 Screw Size

					4	1.3	4	TRS	T6	58 Ga.	Round	25	96817A404	0000


					5	1.3	4	TRS	T6	58 Ga.	Round	25	96817A405	0000
					6	1.3	4	TRS	T6	58 Ga.	Round	25	96817A406	00000
					8	1.3	4	TRS	T6	58 Ga.	Round	25	96817A407	00000




							M2.2 Screw Size

							4	1.4	4.5	TRS	T6	56 Ga.	Round	25	96817A408	0000


							5	1.4	4.5	TRS	T6	56 Ga.	Round	50	96817A409	00000
							6	1.4	4.5	TRS	T6	56 Ga.	Round	25	96817A411	0000
							8	1.4	4.5	TRS	T6	56 Ga.	Round	25	96817A412	0000




									M2.5 Screw Size

									5	1.5	5	TRS	T8	54 Ga.	Round	50	96817A413	00000


									6	1.5	5	TRS	T8	54 Ga.	Round	25	96817A414	00000
									8	1.5	5	TRS	T8	54 Ga.	Round	25	96817A415	0000
									10	1.5	5	TRS	T8	54 Ga.	Round	50	96817A416	00000
									12	1.5	5	TRS	T8	54 Ga.	Round	50	96817A417	00000




											M3 Screw Size

											5	2.1	6	TRS	T10	52 Ga.	Round	50	96817A418	0000


											6	2.1	6	TRS	T10	52 Ga.	Round	50	96817A419	00000
											8	2.1	6	TRS	T10	52 Ga.	Round	50	96817A421	00000
											10	2.1	6	TRS	T10	52 Ga.	Round	50	96817A422	00000
											12	2.1	6	TRS	T10	52 Ga.	Round	50	96817A423	00000




											M3.5 Screw Size

	10	2.4									7	TRS	T10	50 Ga.	Round	25	96817A424	0000


	12	2.4									7	TRS	T10	50 Ga.	Round	25	96817A425	0000
	14	2.4									7	TRS	T10	50 Ga.	Round	25	96817A426	0000




											M4 Screw Size

			8	2.6							8	TRS	T20	45 Ga.	Round	25	96817A427	0000


			10	2.6							8	TRS	T20	45 Ga.	Round	25	96817A428	0000
			12	2.6							8	TRS	T20	45 Ga.	Round	25	96817A429	0000
			14	2.6							8	TRS	T20	45 Ga.	Round	25	96817A431	0000




											M5 Screw Size

					10	3.3					10	TRS	T20	38 Ga.	Round	25	96817A432	00000


					12	3.3					10	TRS	T20	38 Ga.	Round	25	96817A433	00000

Stainless Steel Torx Plus Rounded Head Thread-Forming Screws for Thin-Walled Holes in Plastic

These corrosion-resistant screws thread into thin plastic without damaging the drive or your workpiece. The deep, six-lobe recess withstands more torque than a Torx drive to prevent slipping. These screws have narrow-angle threads that prevent cracking and discoloration in molded plastics, such as ABS, PVC, and polycarbonate. The rounded head creates a finished look.

Length is measured from under the head.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

		Head, mm
	Lg., mm	Dia.	Ht.	Tapping Screw Type	Drive Size	Drill Bit Size	Shank Cross Section	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				M1 Screw Size

				3	1.875	0.8	TRS	IP2, T2	67 Ga.	Round	25	96817A704	000000


				4	1.875	0.8	TRS	IP2, T2	67 Ga.	Round	25	96817A707	00000




						M1.2 Screw Size

						2	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A742	00000


						3	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A744	00000
						4	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A746	00000
						5	2.175	0.95	TRS	IP3, T3	62 Ga.	Round	25	96817A748	00000




								M1.4 Screw Size

								3	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A780	00000


								4	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A783	00000
								5	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A785	00000
								6	2.35	1.15	TRS	IP3, T3	56 Ga.	Round	25	96817A787	00000




										M1.6 Screw Size

										3	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A795	0000


										4	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A797	00000
										5	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A799	00000
										6	2.75	1.2	TRS	IP5, T5	55 Ga.	Round	25	96817A800	00000




												M1.8 Screw Size

												3	3.05	1.35	TRS	IP6, T6	54 Ga.	Round	25	96817A812	00000


												4	3.05	1.35	TRS	IP6, T6	54 Ga.	Round	25	96817A814	00000
												5	3.05	1.35	TRS	IP6, T6	54 Ga.	Round	25	96817A816	00000
												6	3.05	1.35	TRS	IP6, T6	54 Ga.	Round	25	96817A818	00000




	M2 Screw Size

	3												3.35	1.6	TRS	IP6, T6	52 Ga.	Round	25	96817A838	00000


	4	3.35											1.6	TRS	IP6, T6	52 Ga.	Round	25	96817A840	00000
	5	3.35	1.6										TRS	IP6, T6	52 Ga.	Round	25	96817A842	00000
	6	3.35	1.6										TRS	IP6, T6	52 Ga.	Round	25	96817A844	00000
	8	3.35	1.6										TRS	IP6, T6	52 Ga.	Round	25	96817A846	00000




			M2.2 Screw Size

			4										3.75	1.6	TRS	IP6, T6	50 Ga.	Round	25	96817A861	0000


			5	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A863	0000
			6	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A865	0000
			8	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A867	0000
			10	3.75	1.6								TRS	IP6, T6	50 Ga.	Round	25	96817A869	00000




					M2.5 Screw Size

					5								4.25	1.9	TRS	IP8, T8	45 Ga.	Round	25	96817A890	0000


					6	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A892	0000
					8	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A894	0000
					10	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A896	00000
					12	4.25	1.9						TRS	IP8, T8	45 Ga.	Round	25	96817A899	00000




							M3 Screw Size

							5						5.15	2.3	TRS	IP10, T10	41 Ga.	Round	25	96817A904	0000


							6	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A906	0000
							8	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A908	00000
							10	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A910	00000
							12	5.15	2.3				TRS	IP10, T10	41 Ga.	Round	25	96817A912	00000




									M3.5 Screw Size

									6				5.92	2.7	TRS	IP15, T15	34 Ga.	Round	25	96817A932	00000


									10	5.92	2.7		TRS	IP15, T15	34 Ga.	Round	25	96817A935	00000
									12	5.92	2.7		TRS	IP15, T15	34 Ga.	Round	25	96817A938	00000




M4 Screw Size

8											6.82		3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A950	00000


10											6.82	3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A953	00000
12											6.82	3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A956	00000
14											6.82	3.1	TRS	IP20, T20	30 Ga.	Round	25	96817A959	00000




												M4.5 Screw Size

	8	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A971	00000


	10	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A973	00000
	12	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A975	00000
	14	7.5										3.35	TRS	IP20, T20	27 Ga.	Round	25	96817A977	00000




												M5 Screw Size

			10									8.62	3.5	TRS	IP25, T25	21 Ga.	Round	25	96817A984	00000


			12	8.62								3.5	TRS	IP25, T25	21 Ga.	Round	25	96817A987	00000




												M6 Screw Size

												12	10.5	4.35	TRS	IP30, T30	12 Ga.	Round	25	96817A992	00000


					14							10.5	4.35	TRS	IP30, T30	12 Ga.	Round	25	96817A996	00000

Steel Phillips Flat Head Thread-Forming Screws for Plastic


	Round Shank Cross Section

Thread these screws into plastic and secure components, enclosures, and panels with countersunk holes. The head is flat on top and beveled underneath to sit flush with surfaces. The Phillips drive handles enough torque to keep drivers from slipping.

Length is measured from the top of the head.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

		Head, mm
	Lg., mm	Dia.	Ht.	Tapping Screw Type	Drive Size	Countersink Angle	Flat Head Profile	Drill Bit Size, mm	Shank Cross Section	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M1.6 Screw Size

				4	3.3	0.96	TRS	No. 0	90°	Standard	1.2	Round	25	90434A182	00000


				5	3.3	0.96	TRS	No. 0	90°	Standard	1.2	Round	25	90434A184	0000




						M2 Screw Size

						4	3.8	1.2	TRS	No. 0	90°	Standard	1.5	Round	25	90434A183	0000


						5	3.8	1.2	TRS	No. 0	90°	Standard	1.5	Round	25	90434A185	0000
						6	3.8	1.2	TRS	No. 0	90°	Standard	1.5	Round	25	90434A196	0000
						10	3.8	1.2	TRS	No. 0	90°	Standard	1.5	Round	25	90434A126	0000




								M2.2 Screw Size

								5	3.8	1.2	TRS	No. 0	90°	Standard	1.65	Round	50	90434A186	00000


								16	3.8	1.2	TRS	No. 0	90°	Standard	1.65	Round	100	90434A151	00000




										M2.5 Screw Size

										8	4.7	1.7	TRS	No. 1	90°	Standard	1.85	Round	100	90434A205	00000


										10	4.7	1.7	TRS	No. 1	90°	Standard	1.85	Round	100	90434A128	00000
										12	4.7	1.7	TRS	No. 1	90°	Standard	1.85	Round	100	90434A141	00000




												M3 Screw Size

												8	5.5	1.8	TRS	No. 1	90°	Standard	2.25	Round	100	90434A206	00000


												10	5.5	1.8	TRS	No. 1	90°	Standard	2.25	Round	100	90434A129	00000
												12	5.5	1.8	TRS	No. 1	90°	Standard	2.25	Round	100	90434A142	00000
												14	5.5	1.8	TRS	No. 1	90°	Standard	2.25	Round	100	90434A146	00000
												16	5.5	1.8	TRS	No. 1	90°	Standard	2.25	Round	100	90434A153	00000
												20	5.5	1.8	TRS	No. 1	90°	Standard	2.25	Round	100	90434A164	00000




M3.5 Screw Size

10	7.3													2.5	TRS	No. 2	90°	Standard	2.6	Round	100	90434A131	00000


12	7.3													2.5	TRS	No. 2	90°	Standard	2.6	Round	100	90434A143	00000
14	7.3	2.5												TRS	No. 2	90°	Standard	2.6	Round	100	90434A147	00000
16	7.3	2.5	TRS											No. 2	90°	Standard	2.6	Round	100	90434A154	00000




		M4 Screw Size

		8	8.4											2.9	TRS	No. 2	90°	Standard	3	Round	100	90434A208	00000


		10	8.4	2.9										TRS	No. 2	90°	Standard	3	Round	50	90434A132	0000
		12	8.4	2.9	TRS									No. 2	90°	Standard	3	Round	100	90434A144	00000
		16	8.4	2.9	TRS									No. 2	90°	Standard	3	Round	50	90434A155	0000
		20	8.4	2.9	TRS									No. 2	90°	Standard	3	Round	50	90434A166	0000




				M5 Screw Size

				8	9.3									3.4	TRS	No. 2	90°	Standard	3.75	Round	100	90434A209	00000


				10	9.3	3.4								TRS	No. 2	90°	Standard	3.75	Round	50	90434A133	0000
				14	9.3	3.4	TRS							No. 2	90°	Standard	3.75	Round	50	90434A149	0000

Steel Torx Flat Head Thread-Forming Screws for Plastic

Round

Shank

Cross

Section

Prevent drivers from slipping as you thread these screws into plastic to secure components with countersunk holes. Also known as star drive, the six-lobe Torx recess withstands more torque than slotted, Phillips, or hex drives. These screws press threads into molded or cast holes without cracking or distorting material. Use them to fasten plastic parts, enclosures, and panels; the flat, beveled head sits flush in holes.

Length is measured from the top of the head.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

		Head, mm
	Lg., mm	Dia.	Ht.	Tapping Screw Type	Drive Size	Countersink Angle	Flat Head Profile	Drill Bit Size, mm	Shank Cross Section	Pkg. Qty.		Pkg.
Zinc-Plated Steel







				M1.6 Screw Size

				4	3.3	0.96	TRS	T5	90°	Standard	1.2	Round	25	95893A413	00000


				5	3.3	0.96	TRS	T5	90°	Standard	1.2	Round	25	95893A415	0000
				6	3.3	0.96	TRS	T5	90°	Standard	1.2	Round	25	95893A418	0000
				8	3.3	0.96	TRS	T5	90°	Standard	1.2	Round	25	95893A423	0000




						M2 Screw Size

						4	3.8	1.36	TRS	T6	90°	Standard	1.5	Round	25	95893A414	0000


						5	3.8	1.36	TRS	T6	90°	Standard	1.5	Round	25	95893A416	0000
						6	3.8	1.36	TRS	T6	90°	Standard	1.5	Round	25	95893A419	0000
						8	3.8	1.36	TRS	T6	90°	Standard	1.5	Round	50	95893A424	0000




								M2.2 Screw Size

								5	3.8	1.2	TRS	T8	90°	Standard	1.65	Round	50	95893A417	00000


								10	3.8	1.2	TRS	T6	90°	Standard	1.65	Round	100	95893A395	00000




										M2.5 Screw Size

										6	4.7	1.7	TRS	T8	90°	Standard	1.85	Round	100	95893A422	00000


										8	4.7	1.7	TRS	T8	90°	Standard	1.85	Round	100	95893A426	00000
										10	4.7	1.7	TRS	T8	90°	Standard	1.85	Round	100	95893A396	00000




												M3 Screw Size

												8	5.5	1.8	TRS	T8	90°	Standard	2.25	Round	100	95893A427	00000


												10	5.5	1.8	TRS	T8	90°	Standard	2.25	Round	100	95893A397	00000
												12	5.5	1.8	TRS	T8	90°	Standard	2.25	Round	100	95893A403	00000
												16	5.5	1.8	TRS	T8	90°	Standard	2.25	Round	100	95893A408	00000




M3.5 Screw Size

10	7.3													2.5	TRS	T15	90°	Standard	2.6	Round	100	95893A398	00000


12	7.3													2.5	TRS	T15	90°	Standard	2.6	Round	100	95893A404	00000




		M5 Screw Size

		10	9.3											3.6	TRS	T20	90°	Standard	3.75	Round	50	95893A399	0000


		12	9.3											3.6	TRS	T20	90°	Standard	3.75	Round	50	95893A405	0000
		14	9.3											3.6	TRS	T20	90°	Standard	3.75	Round	50	95893A407	00000
		16	9.3											3.6	TRS	T20	90°	Standard	3.75	Round	50	95893A411	00000
		18	9.3											3.6	TRS	T20	90°	Standard	3.75	Round	50	95893A412	00000