GN 653.2 Knurled Thumb Screws Steel, Flat Type, with Recessed Stud for Loss Protection

Standard Sheet GN 653.2 Print This Page Strength Values of Screws

Product description

Knurled thumb screws GN 653.2 are used, for example, to fasten machine covers. The shank d₄ provides simple loss prevention. Instead of a through-hole, this requires a second thread d₁, potentially with a corresponding clearance bore d₅.

Depending on the design and required clamping thickness a₁ ... a₃ of the cover, there are a number of assembly options as shown.

Specification

SteelST

Property class 5
Visible face fine turned
Blackened finish

RoHS

Hide technical drawing

Part Options / Table

Part Number	d₁	l₁	a₁ Min. ... max. (in mm)	a₂ Min. ... max. (in mm)	a₃ Min. ... max. (in mm)	d₂	d₃	d₄ -0.008	d₅	h	k	l₂	l₃

653.2-M4-15-ST	M 4	0.59	2...4	4...8	8...10	0.63	0.31	0.126 -0.008	0.18	0.22	0.14	0.20	0.08
653.2-M4-17-ST	M 4	0.67	4...6	6...10	10...12	0.63	0.31	0.126 -0.008	0.18	0.22	0.14	0.20	0.08
653.2-M4-19-ST	M 4	0.75	6...8	8...12	12...14	0.63	0.31	0.126 -0.008	0.18	0.22	0.14	0.20	0.08
653.2-M4-21-ST	M 4	0.83	8...10	10...14	14...16	0.63	0.31	0.126 -0.008	0.18	0.22	0.14	0.20	0.08
653.2-M5-18-ST	M 5	0.71	2.5...4	4...10.5	10.5...12	0.79	0.39	0.157 -0.008	0.22	0.26	0.16	0.24	0.10
653.2-M5-20-ST	M 5	0.79	4...6	6...12	12...14	0.79	0.39	0.157 -0.008	0.22	0.26	0.16	0.24	0.10
653.2-M5-22-ST	M 5	0.87	6...8	8...14	14...16	0.79	0.39	0.157 -0.008	0.22	0.26	0.16	0.24	0.10
653.2-M5-26-ST	M 5	1.02	8...12	12...16	16...18	0.79	0.39	0.157 -0.008	0.22	0.26	0.16	0.24	0.10
653.2-M6-24-ST	M 6	0.94	3...6	6...13	13...16	0.94	0.47	0.189 -0.008	0.26	0.31	0.20	0.31	0.12
653.2-M6-26-ST	M 6	1.02	6...8	8...16	16...18	0.94	0.47	0.189 -0.008	0.26	0.31	0.20	0.31	0.12
653.2-M6-30-ST	M 6	1.18	8...12	12...18	18...22	0.94	0.47	0.189 -0.008	0.26	0.31	0.20	0.31	0.12
653.2-M6-34-ST	M 6	1.34	12...16	16...22	22...26	0.94	0.47	0.189 -0.008	0.26	0.31	0.20	0.31	0.12
653.2-M8-30-ST	M 8	1.18	4...8	8...16	16...20	1.18	0.63	0.256 -0.008	0.33	0.35	0.24	0.39	0.16
653.2-M8-34-ST	M 8	1.34	8...12	12...20	20...24	1.18	0.63	0.256 -0.008	0.33	0.35	0.24	0.39	0.16
653.2-M8-38-ST	M 8	1.50	12...16	16...24	24...28	1.18	0.63	0.256 -0.008	0.33	0.35	0.24	0.39	0.16
653.2-M8-42-ST	M 8	1.65	16...20	20...28	28...32	1.18	0.63	0.256 -0.008	0.33	0.35	0.24	0.39	0.16

Show / Hide columns

Metric

Dimensions in: Inch (change to Metric)

d₁	l₁	a₁ Min. ... max. (in mm)	a₂ Min. ... max. (in mm)	a₃ Min. ... max. (in mm)	d₂	d₃	d₄ -0.008	d₅	h	k	l₂	l₃

M 4	0.59	2...4	4...8	8...10	0.63	0.31	0.126	0.18	0.22	0.14	0.20	0.08
M 4	0.67	4...6	6...10	10...12	0.63	0.31	0.126	0.18	0.22	0.14	0.20	0.08
M 4	0.75	6...8	8...12	12...14	0.63	0.31	0.126	0.18	0.22	0.14	0.20	0.08
M 4	0.83	8...10	10...14	14...16	0.63	0.31	0.126	0.18	0.22	0.14	0.20	0.08
M 5	0.71	2.5...4	4...10.5	10.5...12	0.79	0.39	0.157	0.22	0.26	0.16	0.24	0.10
M 5	0.79	4...6	6...12	12...14	0.79	0.39	0.157	0.22	0.26	0.16	0.24	0.10
M 5	0.87	6...8	8...14	14...16	0.79	0.39	0.157	0.22	0.26	0.16	0.24	0.10
M 5	1.02	8...12	12...16	16...18	0.79	0.39	0.157	0.22	0.26	0.16	0.24	0.10
M 6	0.94	3...6	6...13	13...16	0.94	0.47	0.189	0.26	0.31	0.20	0.31	0.12
M 6	1.02	6...8	8...16	16...18	0.94	0.47	0.189	0.26	0.31	0.20	0.31	0.12
M 6	1.18	8...12	12...18	18...22	0.94	0.47	0.189	0.26	0.31	0.20	0.31	0.12
M 6	1.34	12...16	16...22	22...26	0.94	0.47	0.189	0.26	0.31	0.20	0.31	0.12
M 8	1.18	4...8	8...16	16...20	1.18	0.63	0.256	0.33	0.35	0.24	0.39	0.16
M 8	1.34	8...12	12...20	20...24	1.18	0.63	0.256	0.33	0.35	0.24	0.39	0.16
M 8	1.50	12...16	16...24	24...28	1.18	0.63	0.256	0.33	0.35	0.24	0.39	0.16
M 8	1.65	16...20	20...28	28...32	1.18	0.63	0.256	0.33	0.35	0.24	0.39	0.16

Build & Price

Selected Part

Part Number

Total (net)

Can$3.66

Available within 1-2 weeks

Quantity

Create Project List

Save as Favorites

Please note our quantity discounts (Canadian Dollars).

Min	Max	Price
1	99	Can$3.66
100	249	Can$3.36
250	499	Can$3.05
≥ 500		Can$2.75

Prop 65: Not compliant

WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov

RoHS: Compliant

This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).

Weight: 0.015 lbs

If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 1-800-397-6993