Plastic Thread | McMaster-Carr

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81 Products

Pipe Thread and Thread Pitch Identifiers

In addition to checking NPT and BSPT pipe sizes, use the two included gauges for measuring thread pitch.

For Thread Type	For Pipe Size	For Gender	Wd.	Ht.	Thk.	Thread Size Identifier Material	Thread Pitch Identifier Material	Color		Each



Pipe	BSPT, NPT	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	Female, Male	9"	4 1/4"	1/4"	Plastic	Steel	Blue	5887T1	00000

Wall-Mount Thread-It Screw, Bolt, and Nut Size Identifiers

Mount to a wall for easy access, and thread your fastener into holes or onto plugs for quick and accurate size identification.

								Mounting Holes
	For Use With	For Thread Type	For Thread Location	For Thread Size	Wd.	Ht.	Thk.	No. of	Hole Dia.	Fasteners Included		Each
Inch/Metric







				Steel

				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF/Metric	External/Internal	6-32, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M7 × 1 mm, M8 × 1 mm, M8 × 1.25 mm, M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M12 × 1.25 mm, M12 × 1.5 mm, M12 × 1.75 mm	3"	39"	1/2"	3	5/16"	No	20375A27	000000

Thread Identifier Sets

Set includes calipers and gauges to identify external and internal threads.

				Container
	For Use With	For Thread Type	For Thread Location	Type	Material	Includes		Each
Inch/Metric







				Steel

				Screws, Bolts, Threaded Rods, Nuts, Pipe	NPT, UNC, UNF, BSPT, BSPP, Metric	External/Internal	Folding Case	Plastic	Caliper, Instruction Book, Two Steel Angle Gauges, Two Steel Gauges	7863K1	000000

Threads per Inch and Thread Pitch Size Checkers

Inspect fasteners and verify threads with this checker. It includes three wires for each of the pitch diameters. Select the wire that best fits the threads; then calculate the pitch diameter with the equations provided.

								Wire		Container
	For Use With	For Thread Type	For Thread Location	For Threads per In.	For Thread Pitch, mm	For Acme Threads per In.	No. of Wires	Lg.	Material	Type	Material		Each
Inch/Metric



		Screws, Bolts, Threaded Rods, Pipe	NPT, UNC, UNF, Metric, Acme	External	3, 3 1/2, 4, 4 1/2, 5, 5 1/2, 6, 7, 7 1/2, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 16, 18, 20, 24, 27, 28, 32, 36, 40, 44, 48	0.5, 0.6, 0.7, 0.75, 0.8, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6	3, 4, 5, 6, 8, 10, 12, 14, 16	48	2 3/4"	Stainless Steel	Pouch	Vinyl Plastic	2082A1	000000

Thread

The coating keeps the ends from fraying and acts as a lubricant during sewing. Made of nylon, thread offers a good balance between stretch and strength.

Dia.	Thread Trade Size	Breaking Strength, lbf	Lg., ft.	Material	Coating Material	Color	Can Be Spliced	Max. Temp., ° F	Specs. Met	Application
0.016"	70	10	1,080	Nylon	Nylon	White	Yes	350	Fed. Spec. V-T-295	Not for Lifting	87695K31
0.025"	210	30	415	Nylon	Nylon	White	Yes	350	Fed. Spec. V-T-295	Not for Lifting	87695K32
0.032"	350	50	245	Nylon	Nylon	White	Yes	350	Fed. Spec. V-T-295	Not for Lifting	87695K33

All-in-One Identifiers

Find tube, pipe, fastener, wire, and drill bit sizes with one tool.

For Pipe Size	For Pipe Fitting Size	Wd.	Ht.		Each







Plastic

Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire	No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12	1/32", 3/64", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2", 65 Ga., 60 Ga., 55 Ga., 50 Ga., 45 Ga., 40 Ga., 35 Ga., 30 Ga., 25 Ga., 20 Ga., 15 Ga., 10 Ga., 5 Ga., A, F, K, P, U, Z	1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	10 1/2"	3 1/2"	20165A34	00000


Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire	No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12	1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8"	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	1/8, 1/4, 3/8, 1/2, 3/4, 1	8 11/16"	4 1/4"	20165A33	0000

Screw, Bolt, and Nut Size Identifiers


Inch	Inch/Metric	Metric

Use on external and internal fastener threads.

	For Screw Size	For Thread Pitch, mm	For Nut Size	Wd.	Ht.	Thk.		Each
Inch







	Plastic

	Screws, Bolts, Threaded Rods, Nuts	—	External/Internal	No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4"	—	No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8"	7 1/2"	2 3/8"	1/64"	98845A650	00000


	Inch/Metric







					Plastic

					Screws, Bolts, Threaded Rods, Nuts	—	External/Internal	No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 1", M6, M7, M8, M10, M12, M14, M16, M18, M20, M22	—	No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8"	9"	3 3/4"	1/64"	98845A670	0000


					Metric







									Plastic

									Screws, Bolts, Threaded Rods, Nuts	Metric	External/Internal	M6, M7, M8, M10, M12, M14, M16	1, 1.25, 1.5, 1.75, 2	M10, M11, M13, M17, M19, M22, M24	5 1/4"	3 3/16"	1/64"	98845A660	0000

Clear Nylon Line

Also known as fishing line, this line is very thin, yet strong and wear resistant.

	Breaking Strength, lbf	Application	Lg., ft.		Each
Spool



	0.008"	4	Not for Lifting	990	9442T5	00000


	0.012"	8	Not for Lifting	990	9442T1	0000
	0.017"	10	Not for Lifting	900	9442T2	00000
	0.028"	50	Not for Lifting	820	9442T4	00000
	0.032"	60	Not for Lifting	900	9442T101	00000
	0.037"	80	Not for Lifting	900	9442T102	00000
	0.043"	100	Not for Lifting	900	9442T103	00000

Weather-Resistant Thread

The coating keeps the ends from fraying and acts as a lubricant during sewing. Made of polyester, thread is moisture and and UV resistant.

Dia.	Thread Trade Size	Breaking Strength, lbf	Lg., ft.	Material	Coating Material	Color	Can Be Spliced	Max. Temp., ° F	Specs. Met	Application		Each
0.023"	135	20	620	Polyester Plastic	Plastic	White	Yes	400	Fed. Spec. V-T-285	Not for Lifting	87635K61	000000
0.030"	350	50	40	Polyester Plastic	Wax	Black	No	300	—	Not for Lifting	6356K91	00000
0.030"	350	50	40	Polyester Plastic	Wax	White	No	300	—	Not for Lifting	6356K92	00000
0.030"	350	50	245	Polyester Plastic	Plastic	White	Yes	400	Fed. Spec. V-T-285	Not for Lifting	87635K62	00000
0.045"	700	110	360	Polyester Plastic	Plastic	White	Yes	400	Fed. Spec. V-T-285	Not for Lifting	87635K63	00000

Chemical-Resistant High-Temperature Thread

This thread has excellent chemical, ultraviolet, heat, and flame resistance and withstands temperatures up to 1000° F.

Dia.	Breaking Strength, lbf	Lg., ft.	Material	Coating Material	Color	Can Be Spliced	Max. Temp., ° F	Coating Max. Temp., ° F	Application		Each
0.014"	10	300	Fiberglass	PTFE	Beige	Yes	1,000	500	Not for Lifting	8839K21	000000
0.017"	10	300	Fiberglass	PTFE	Beige	Yes	1,000	500	Not for Lifting	8839K22	00000
0.021"	20	300	Fiberglass	PTFE	Beige	Yes	1,000	500	Not for Lifting	8839K23	00000

Conduit Threading Line

Use a blower or vacuum to insert this lightweight threading line into conduit or raceway and attach it to your pulling rope to guide the rope. Made of polypropylene, this line is mildew resistant, so it can be left in place for future use.

Note: Not for directly pulling wire or cable.

Lg., ft.	Container Type	Breaking Strength, lbf	Material	Color	Stripe Color	Pattern	Features		Each
6,500	Pail	210	Polypropylene	White	Blue	Striped	Pail Cover with Center Hole	5043K2	000000

Wear-Resistant High-Strength Twine


	Pocket Card	Tube

The braided construction makes this twine more wear resistant and less likely to unravel than twisted twine. It is nylon for a good balance between stretch and strength. It resists UV rays and rot.

	Application	Lg., ft.	Choose a Color		Each
Nylon







	1/4 lb. Pocket Card

	0.058"	18	130	Not for Lifting	250	White	2057T201	00000




			1/4 lb. Tube

			0.046"	12	80	Not for Lifting	100	White	2057T35	0000


			0.058"	18	130	Not for Lifting	250	White	2057T75	0000
			0.058"	18	150	Not for Lifting	250	Fluorescent Orange, Fluorescent Pink, Fluorescent Yellow	2057T88	0000




					1/2 lb. Pocket Card

					0.065"	21	160	Not for Lifting	460	White	2057T202	0000




							1/2 lb. Tube

							0.046"	12	80	Not for Lifting	250	White	2057T36	0000


							0.058"	18	130	Not for Lifting	480	White	2057T76	00000
							0.058"	18	150	Not for Lifting	500	Fluorescent Orange, Fluorescent Pink, Fluorescent Yellow	2057T86	00000
							0.073"	24	210	Not for Lifting	360	White	2057T203	0000
							0.078"	30	230	Not for Lifting	320	White	2057T204	0000
							0.085"	36	270	Not for Lifting	270	White	2057T205	0000
							0.103"	48	390	Not for Lifting	180	White	2057T206	0000
							0.125"	72	560	Not for Lifting	120	White	2057T207	0000




									1 lb. Tube

									0.058"	18	130	Not for Lifting	960	White	2057T77	00000


									0.058"	18	150	Not for Lifting	1,000	Fluorescent Orange, Fluorescent Pink, Fluorescent Yellow	2057T87	00000
									0.065"	21	160	Not for Lifting	930	White	2057T208	00000
									0.078"	30	230	Not for Lifting	640	White	2057T209	00000
									0.085"	36	270	Not for Lifting	540	White	2057T211	00000
									0.103"	48	390	Not for Lifting	370	White	2057T212	00000
									0.125"	72	560	Not for Lifting	250	White	2057T213	00000

Ultra-High-Temperature Thread

Made of quartz, this thread resists acids, alkalies, and the buildup of contaminants. It's nonburning and has a maximum temperature of 2000° F.

Dia.	Breaking Strength, lbf	Lg., ft.	Material	Coating Material	Color	Can Be Spliced	Max. Temp., ° F	Coating Max. Temp., ° F	Application		Each
0.014"	10	300	Quartz	PTFE	Beige	Yes	2,000	500	Not for Lifting	6373K88	0000000
0.017"	20	300	Quartz	PTFE	Beige	Yes	2,000	500	Not for Lifting	6373K89	000000

Sure-Grip High-Strength Twine


	Pocket Card	Tube

The twisted construction lets you tightly grip this twine without it slipping. Twine is nylon for a good balance between stretch and strength. It resists UV rays and rot.

	Application	Color	Lg., ft.		Each
Nylon







	Pocket Card

	0.058"	18	130	Not for Lifting	White	250	1938T18	00000




			1/2 lb. Tube

			0.046"	12	80	Not for Lifting	White	900	1938T31	0000


			0.058"	18	130	Not for Lifting	White	550	1938T32	0000
			0.065"	21	160	Not for Lifting	White	400	1938T33	0000
			0.073"	24	210	Not for Lifting	White	330	1938T34	0000
			0.078"	30	230	Not for Lifting	White	310	1938T35	0000
			0.085"	36	270	Not for Lifting	White	260	1938T36	0000
			0.103"	48	390	Not for Lifting	White	190	1938T37	0000
			0.125"	72	560	Not for Lifting	White	130	1938T38	0000




					1 lb. Tube

					0.046"	12	80	Not for Lifting	White	1,800	1938T39	0000


					0.058"	18	130	Not for Lifting	White	1,100	1938T41	0000
					0.065"	21	160	Not for Lifting	White	800	1938T42	0000
					0.073"	24	210	Not for Lifting	White	660	1938T43	0000
					0.078"	30	230	Not for Lifting	White	620	1938T44	0000
					0.085"	36	270	Not for Lifting	White	535	1938T45	0000
					0.103"	48	390	Not for Lifting	White	380	1938T46	0000
					0.125"	72	560	Not for Lifting	White	260	1938T47	0000

Weather- and Wear-Resistant Twine

Spool

With excellent resistance to UV rays and rot, this twine is a great choice for outdoor use. It has a wear-resistant braided construction that makes it less likely to unravel than twisted twine.

	Color	Lg., ft.		Each
Polyester Plastic







	Spool

	0.033"	50	Not for Lifting	White	100	8936T61	000000


	0.042"	90	Not for Lifting	White	100	8936T62	00000
	0.060"	180	Not for Lifting	White	100	8936T63	00000

Sure-Grip Weather-Resistant Twine

Pocket Card

Tube

Resistant to rot, mildew, oil, gas, and acid, this polypropylene twine lasts in the harshest conditions. The twisted construction lets you tightly grip it without it slipping.

	Color	Lg., ft.		Each
Polypropylene







	Pocket Card

	0.050"	130	Not for Lifting	White	150	2078T34	00000




			10 lb. Tube

			0.050"	130	Not for Lifting	White	8,500	2078T11	00000


			0.070"	180	Not for Lifting	White	6,500	2078T12	00000
			0.080"	210	Not for Lifting	White	5,500	2078T13	00000
			0.100"	260	Not for Lifting	White	4,500	2078T14	00000
			0.110"	250	Not for Lifting	White	4,200	2078T21	00000
			0.110"	380	Not for Lifting	White	2,800	2078T23	00000
			0.110"	400	Not for Lifting	White	2,720	2078T22	00000
			0.130"	320	Not for Lifting	White	3,500	2078T15	00000
			0.240"	600	Not for Lifting	White	1,810	2078T24	00000

Pipe, Tubing, and Hose Size Identifiers

For Pipe, Tubing, And

Hose

Determine pipe size and inner and outer diameter.

	For Hose ID	Includes	Wd.	Ht.	Thk.	Color		Each
Inch







	Plastic

	Pipe, Hose, Tubing	1/8, 1/4, 3/8, 1/2, 3/4	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 1"	1/4", 3/8", 1/2", 3/4", 1"	Compression Fitting Chart	9"	3 3/4"	7/64"	Blue	1976A22	00000