Ball-Ended Thrust Screws

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174 Products

Easy-Adjust Steel Ball-Tip Set Screws

Keep pressure consistent on workpieces that aren't fully flat or parallel. A rolling ball on the tip of these screws maintains contact and swivels 360° to make small adjustments without loosening. Made of alloy steel, they are strong enough to hold components without wearing down.

Black-Oxide Alloy Steel—These screws have a dark matte finish that offers minimal corrosion resistance, so they're best for dry environments.

	Lg.	Tip Dia.	Drive Size	Ball Movement	Hardness		Each
Black-Oxide Alloy Steel







				1/4"-20

				1/2"	0.157"	1/8"	360° Rotation	Rockwell C32	91677A106	00000


				3/4"	0.157"	1/8"	360° Rotation	Rockwell C32	91677A110	0000




						5/16"-18

						3/4"	0.216"	5/32"	360° Rotation	Rockwell C32	91677A114	0000


						1"	0.216"	5/32"	360° Rotation	Rockwell C32	91677A118	0000




								3/8"-16

								3/4"	0.275"	3/16"	360° Rotation	Rockwell C32	91677A122	0000


								1"	0.275"	3/16"	360° Rotation	Rockwell C32	91677A126	0000




										1/2"-13

										1"	0.334"	1/4"	360° Rotation	Rockwell C32	91677A130	0000


										1 1/2"	0.334"	1/4"	360° Rotation	Rockwell C32	91677A134	0000




												5/8"-11

												1"	0.472"	5/16"	360° Rotation	Rockwell C32	91677A138	00000


												1 1/2"	0.472"	5/16"	360° Rotation	Rockwell C32	91677A142	00000


												Alloy Steel







																M3 × 0.5 mm

5 mm	1.5 mm															1.5 mm	360° Rotation	Rockwell C39	93339A245	0000


7.5 mm	1.5 mm															1.5 mm	360° Rotation	Rockwell C39	93339A246	0000
10 mm	1.5 mm	1.5 mm														360° Rotation	Rockwell C39	93339A247	0000




		M4 × 0.7 mm

		6 mm	2.5 mm													2 mm	360° Rotation	Rockwell C39	93339A062	0000


		8 mm	2.5 mm													2 mm	360° Rotation	Rockwell C39	93339A064	0000
		10 mm	2.5 mm	2 mm												360° Rotation	Rockwell C39	93339A248	0000
		12 mm	2.5 mm	2 mm	360° Rotation											Rockwell C39	93339A066	0000
		16 mm	2.5 mm	2 mm	360° Rotation											Rockwell C39	93339A249	0000




				M5 × 0.8 mm

				8 mm	3 mm											2.5 mm	360° Rotation	Rockwell C39	93339A121	0000


				10 mm	3 mm	2.5 mm	360° Rotation									Rockwell C39	93339A250	0000
				12 mm	3 mm	2.5 mm	360° Rotation									Rockwell C39	93339A124	0000
				16 mm	3 mm	2.5 mm	360° Rotation									Rockwell C39	93339A251	0000
				20 mm	3 mm	2.5 mm	360° Rotation									Rockwell C39	93339A128	0000
				25 mm	3 mm	2.5 mm	360° Rotation									Rockwell C39	93339A252	0000




						M6 × 1 mm

						10.8 mm	4 mm	3 mm	360° Rotation							Rockwell C39	93339A205	0000


						12.8 mm	4 mm	3 mm	360° Rotation							Rockwell C39	93339A208	0000
						16.8 mm	4 mm	3 mm	360° Rotation							Rockwell C39	93339A211	0000
						20.8 mm	4 mm	3 mm	360° Rotation							Rockwell C39	93339A214	0000
						25.8 mm	4 mm	3 mm	360° Rotation							Rockwell C39	93339A217	0000




								M8 × 1.25 mm

								11.2 mm	5.5 mm	4 mm	360° Rotation					Rockwell C39	93339A221	0000


								13.2 mm	5.5 mm	4 mm	360° Rotation					Rockwell C39	93339A223	0000
								17.2 mm	5.5 mm	4 mm	360° Rotation					Rockwell C39	93339A226	0000
								21.2 mm	5.5 mm	4 mm	360° Rotation					Rockwell C39	93339A227	0000
								26.2 mm	5.5 mm	4 mm	360° Rotation					Rockwell C39	93339A253	0000
								31.2 mm	5.5 mm	4 mm	360° Rotation					Rockwell C39	93339A229	0000




										M10 × 1.5 mm

										13.7 mm	7 mm	5 mm	360° Rotation	Rockwell C39		93339A254	0000


										17.7 mm	7 mm	5 mm	360° Rotation	Rockwell C39	93339A230	0000
										21.7 mm	7 mm	5 mm	360° Rotation	Rockwell C39	93339A231	0000
										26.7 mm	7 mm	5 mm	360° Rotation	Rockwell C39	93339A232	0000
31.7 mm										7 mm	5 mm	360° Rotation	Rockwell C39	93339A255	0000
36.7 mm	7 mm									5 mm	360° Rotation	Rockwell C39	93339A235	0000
41.7 mm	7 mm									5 mm	360° Rotation	Rockwell C39	93339A256	0000




										M12 × 1.75 mm

										18 mm	8.5 mm	6 mm	360° Rotation	Rockwell C39	93339A257	0000


										22 mm	8.5 mm	6 mm	360° Rotation	Rockwell C39	93339A238	0000
		27 mm								8.5 mm	6 mm	360° Rotation	Rockwell C39	93339A239	0000
		32 mm	8.5 mm							6 mm	360° Rotation	Rockwell C39	93339A241	0000
		42 mm	8.5 mm							6 mm	360° Rotation	Rockwell C39	93339A244	0000
		52 mm	8.5 mm							6 mm	360° Rotation	Rockwell C39	93339A258	0000




										M16 × 2 mm

										28.3 mm	12 mm	8 mm	360° Rotation	Rockwell C39	93339A260	00000


										38.3 mm	12 mm	8 mm	360° Rotation	Rockwell C39	93339A261	00000
				53.3 mm						12 mm	8 mm	360° Rotation	Rockwell C39	93339A262	00000




										M20 × 2.5 mm

										44.2 mm	15 mm	10 mm	360° Rotation	Rockwell C39	93339A264	00000


										64.2 mm	15 mm	10 mm	360° Rotation	Rockwell C39	93339A266	00000




										M24 × 3 mm

										54.7 mm	18 mm	12 mm	360° Rotation	Rockwell C39	93339A268	00000


										84.7 mm	18 mm	12 mm	360° Rotation	Rockwell C39	93339A269	00000

Precision-Adjust Stainless Steel Ball-Tip Set Screws

These set screws make the finest adjustments of any we sell. With ultra-fine threads, these screws are found on measuring devices and photonic equipment, where minute adjustments and tight tolerances are critical. They also fine-tune sensors on automated equipment and ensure repeatable positioning on jigs and fixtures. Generally used in dry, controlled environments, the alloy steel tip can oxidize in wet or outdoor environments.

	Lg.	Tip Dia.	Drive Size	Ball Movement	Hardness		Each
18-8 Stainless Steel with Alloy Steel Tip







				6-80

				3/8"	0.094"	5/64"	Fixed	Not Rated	98625A400	000000


				7/16"	0.094"	5/64"	Fixed	Not Rated	98625A404	00000
				1/2"	0.094"	5/64"	Fixed	Not Rated	98625A406	00000
				37/64"	0.094"	5/64"	Fixed	Not Rated	98625A409	00000
				3/4"	0.094"	5/64"	Fixed	Not Rated	98625A411	00000
				7/8"	0.094"	5/64"	Fixed	Not Rated	98625A415	00000
				1"	0.094"	5/64"	Fixed	Not Rated	98625A420	00000
				1 1/8"	0.094"	5/64"	Fixed	Not Rated	98625A425	00000
				1 1/4"	0.094"	5/64"	Fixed	Not Rated	98625A427	00000
				1 1/2"	0.094"	5/64"	Fixed	Not Rated	98625A436	00000




						3/16"-100

						3/8"	0.156"	3/32"	Fixed	Not Rated	98625A110	0000


						1/2"	0.156"	3/32"	Fixed	Not Rated	98625A130	0000
						3/4"	0.156"	3/32"	Fixed	Not Rated	98625A160	00000
						1"	0.156"	3/32"	Fixed	Not Rated	98625A190	00000
						1 1/4"	0.156"	3/32"	Fixed	Not Rated	98625A220	00000
						1 1/2"	0.156"	3/32"	Fixed	Not Rated	98625A230	00000
						1 3/4"	0.156"	3/32"	Fixed	Not Rated	98625A250	00000
						2"	0.156"	3/32"	Fixed	Not Rated	98625A280	00000




								1/4"-80

								3/8"	0.156"	3/32"	Fixed	Not Rated	98625A620	00000


								1/2"	0.156"	3/32"	Fixed	Not Rated	98625A650	00000
								3/4"	0.156"	3/32"	Fixed	Not Rated	98625A680	00000
								1"	0.156"	3/32"	Fixed	Not Rated	98625A710	00000
								1 1/4"	0.156"	3/32"	Fixed	Not Rated	98625A740	00000
								1 1/2"	0.156"	3/32"	Fixed	Not Rated	98625A750	00000
								1 3/4"	0.156"	3/32"	Fixed	Not Rated	98625A770	00000
								2"	0.156"	3/32"	Fixed	Not Rated	98625A800	00000
								2 1/4"	0.156"	3/32"	Fixed	Not Rated	98625A100	00000
								2 1/2"	0.156"	3/32"	Fixed	Not Rated	98625A108	00000
								2 3/4"	0.156"	3/32"	Fixed	Not Rated	98625A120	00000


								3"	0.156"	3/32"	Fixed	Not Rated	98625A125	00000
								3 1/4"	0.156"	3/32"	Fixed	Not Rated	98625A128	00000
								3 1/2"	0.156"	3/32"	Fixed	Not Rated	98625A143	00000
								3 3/4"	0.156"	3/32"	Fixed	Not Rated	98625A161	00000
								4"	0.156"	3/32"	Fixed	Not Rated	98625A169	00000




								1/4"-100

		3/8"						0.156"	3/32"	Fixed	Not Rated	98625A172	00000


		1/2"	0.156"					3/32"	Fixed	Not Rated	98625A185	00000
		3/4"	0.156"					3/32"	Fixed	Not Rated	98625A195	00000
		1"	0.156"					3/32"	Fixed	Not Rated	98625A200	00000
		1 1/4"	0.156"					3/32"	Fixed	Not Rated	98625A223	00000
		1 1/2"	0.156"					3/32"	Fixed	Not Rated	98625A249	00000
		1 3/4"	0.156"					3/32"	Fixed	Not Rated	98625A301	00000
		2"	0.156"					3/32"	Fixed	Not Rated	98625A344	00000
		2 1/4"	0.156"					3/32"	Fixed	Not Rated	98625A349	00000
		2 1/2"	0.156"					3/32"	Fixed	Not Rated	98625A351	00000
		2 3/4"	0.156"					3/32"	Fixed	Not Rated	98625A356	00000


		3"	0.156"					3/32"	Fixed	Not Rated	98625A360	00000
		3 1/4"	0.156"					3/32"	Fixed	Not Rated	98625A361	00000
		3 1/2"	0.156"					3/32"	Fixed	Not Rated	98625A364	00000
		3 3/4"	0.156"	3/32"				Fixed	Not Rated	98625A376	00000
		4"	0.156"	3/32"	Fixed			Not Rated	98625A391	00000




				M2.5 × 0.2 mm

				8 mm	1.5 mm			1.5 mm	Fixed	Not Rated	98625A455	00000


				10 mm	1.5 mm			1.5 mm	Fixed	Not Rated	98625A485	00000
				12 mm	1.5 mm			1.5 mm	Fixed	Not Rated	98625A498	00000
				15 mm	1.5 mm			1.5 mm	Fixed	Not Rated	98625A503	00000
				20 mm	1.5 mm			1.5 mm	Fixed	Not Rated	98625A504	00000
				25 mm	1.5 mm			1.5 mm	Fixed	Not Rated	98625A507	00000




						M3 × 0.2 mm

						8 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A546	00000


						10 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A547	00000
						12 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A553	00000
						15 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A563	00000
						20 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A565	00000
						25 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A568	00000
						30 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A569	00000
						33 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A570	00000
						36 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A580	00000
						39 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A581	00000




								M3 × 0.25 mm

								8 mm	1.6 mm	1.5 mm	Fixed	Not Rated	98625A511	00000


10 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A515	00000
12 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A518	00000
15 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A527	00000
20 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A528	00000
25 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A529	00000
30 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A541	00000
33 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A543	00000
36 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A544	00000
39 mm	1.6 mm							1.5 mm	Fixed	Not Rated	98625A545	00000

Threaded Inserts

Install these inserts with ultra-fine threads into unthreaded holes to create a secure mounting point for your precision-adjust set screws.

		Flange
	Installed Lg.	Dia.	Thk.	For Max. Hole Dia.	Drill Bit Size		Each
Brass







				6-80

				0.250"	1/4"	0.03"	0.219"	7/32"	98625A624	00000


				0.375"	1/4"	0.03"	0.219"	7/32"	98625A847	0000




						3/16"-100

						0.313"	0.29"	0.01"	0.250"	1/4"	98625A320	0000


						0.438"	0.29"	0.01"	0.250"	1/4"	98625A330	0000
						0.625"	0.29"	0.01"	0.250"	1/4"	98625A340	0000
						0.750"	0.29"	0.01"	0.250"	1/4"	98625A350	0000




								1/4"-80

								0.313"	0.352"	0.01"	0.313"	5/16"	98625A950	0000


								0.438"	0.352"	0.01"	0.313"	5/16"	98625A960	0000
								0.625"	0.352"	0.01"	0.313"	5/16"	98625A970	0000
								0.750"	0.352"	0.01"	0.313"	5/16"	98625A980	0000




										1/4"-100

										0.313"	0.352"	0.01"	0.313"	5/16"	98625A586	0000


										0.438"	0.352"	0.01"	0.313"	5/16"	98625A591	0000
										0.625"	0.352"	0.01"	0.313"	5/16"	98625A599	0000
										0.750"	0.352"	0.01"	0.313"	5/16"	98625A602	0000




												M2.5 × 0.2 mm

												7 mm	4.5 mm	0.5 mm	4 mm	4 mm	98625A848	0000




														M3 × 0.2 mm

														5 mm	4.95 mm	0.25 mm	4.5 mm	4.5 mm	98625A879	0000


7 mm	4.95 mm													0.25 mm	4.5 mm	4.5 mm	98625A892	0000
9 mm	4.95 mm													0.25 mm	4.5 mm	4.5 mm	98625A965	0000




		M3 × 0.25 mm

		5 mm	4.95 mm											0.25 mm	4.5 mm	4.5 mm	98625A849	0000


		7 mm	4.95 mm											0.25 mm	4.5 mm	4.5 mm	98625A852	0000
		9 mm	4.95 mm											0.25 mm	4.5 mm	4.5 mm	98625A858	0000

Precision-Adjust Ball-Tip Thumb Screws

Make precise adjustments where tight tolerances are critical. With ultra-fine threads, these thumb screws are often found on measuring devices and photonic equipment. The rolling ball tip maintains contact and swivels 360° so you can make adjustments without loosening the screw. The narrow width of the head allows these thumb screws to fit in spaces with limited clearance. The knurled texture creates extra grip as you twist. These thumb screws combine the strength of stainless steel with a lightweight plastic head that won’t rust.

Length is measured from under the head.

18-8 Stainless Steel with Acetal Head—With a stainless steel body and an acetal head, these screws resist moisture and are chemical resistant.

		Head
	Lg.	Dia.	Ht.	Color	Tip Dia.	Threading	Tensile Strength, psi		Each
18-8 Stainless Steel with Acetal Head







				3/16"-100

				3/4"	3/8"	7/16"	Black	1/8"	Fully Threaded	60,000	97424A110	000000


				1"	3/8"	7/16"	Black	1/8"	Fully Threaded	60,000	97424A140	00000
				1 1/4"	3/8"	7/16"	Black	1/8"	Fully Threaded	60,000	97424A170	00000
				1 1/2"	3/8"	7/16"	Black	1/8"	Fully Threaded	60,000	97424A200	00000
				1 3/4"	3/8"	7/16"	Black	1/8"	Fully Threaded	60,000	97424A230	00000




						1/4"-80

						3/4"	1/2"	3/4"	Black	3/16"	Fully Threaded	60,000	97424A560	00000


						1"	1/2"	3/4"	Black	3/16"	Fully Threaded	60,000	97424A590	0000
						1 1/4"	1/2"	3/4"	Black	3/16"	Fully Threaded	60,000	97424A620	0000
						1 1/2"	1/2"	3/4"	Black	3/16"	Fully Threaded	60,000	97424A650	0000
						2"	1/2"	3/4"	Black	3/16"	Fully Threaded	60,000	97424A680	00000
						3"	1/2"	3/4"	Black	3/16"	Fully Threaded	60,000	97424A740	00000
						3 1/2"	1/2"	3/4"	Black	3/16"	Fully Threaded	60,000	97424A770	00000

Threaded Inserts

Install in unthreaded holes to create a secure mounting point for your precision-adjust thumb screws.

		Flange
	Installed Lg.	Dia.	Thk.	For Max. Hole Dia.	Drill Bit Size		Each
Brass







				3/16"-100

				0.313"	0.29"	0.01"	0.250"	1/4"	98625A320	00000


				0.438"	0.29"	0.01"	0.250"	1/4"	98625A330	0000
				0.625"	0.29"	0.01"	0.250"	1/4"	98625A340	0000
				0.750"	0.29"	0.01"	0.250"	1/4"	98625A350	0000




						1/4"-80

						0.313"	0.352"	0.01"	0.313"	5/16"	98625A950	0000


						0.438"	0.352"	0.01"	0.313"	5/16"	98625A960	0000
						0.625"	0.352"	0.01"	0.313"	5/16"	98625A970	0000
						0.750"	0.352"	0.01"	0.313"	5/16"	98625A980	0000

Easy-Adjust Stainless Steel Ball-Tip Set Screws

The most corrosion-resistant ball-tip set screws we offer. Made of stainless steel, they won't rust, but they're not as strong as alloy steel. These screws are used to keep pressure consistent on workpieces that aren't fully flat or parallel. A rolling ball on the tip maintains contact and swivels 360° to make small adjustments without loosening the screw.

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

	Ball Movement	Hardness		Each
18-8 Stainless Steel







	1/4"-20

	1/2"	0.157"	1/8"	360° Rotation	Rockwell C30	91658A147	00000


	3/4"	0.157"	1/8"	360° Rotation	Rockwell C30	91658A154	0000




			5/16"-18

			3/4"	0.216"	5/32"	360° Rotation	Rockwell C30	91658A159	0000


			1"	0.216"	5/32"	360° Rotation	Rockwell C30	91658A163	0000




					3/8"-16

					3/4"	0.275"	3/16"	360° Rotation	Rockwell C30	91658A168	00000


					1"	0.275"	3/16"	360° Rotation	Rockwell C30	91658A172	00000




							1/2"-13

							1"	0.334"	1/4"	360° Rotation	Rockwell C30	91658A183	00000


							1 1/2"	0.334"	1/4"	360° Rotation	Rockwell C30	91658A189	00000




									5/8"-11

									1"	0.472"	5/16"	360° Rotation	Rockwell C30	91658A194	00000


									1 1/2"	0.472"	5/16"	360° Rotation	Rockwell C30	91658A198	00000