GN 653.2 Flat Knurled Thumb Screws Stainless Steel, with recessed stud for loss prevention


Product Family Stainless Steel

Standard parts made of rustproof stainless steel have been designed for use in the food sector, in the chemical industry, for aggressive ambient conditions or for outdoor use.

  • corrosion-resistant
  • precise fit
  • environmentally friendly
Show all Stainless Steel products

Product description


GN 653.2 thumb screws can be used to prevent loss of the thumb screw, due to the d4 recessed portion of the stud.

When using, instead of a typical tapped and bored hole, it is necessary to provide tapped bores with a thread d1 on each of the two elements to be assembled.

Additionally, a clearance bore of d5 on one or both sides must be cut.

Depending on the design and required clamping length a1 - a3 of the component being attached, there are a number of assembly options as shown below.


Knurled thumb screw body
  • Stainless steelNI, European Standard No. 1.4305 (AISI 303)
  • visible face fine turned
  • matte shot-blasted

RoHS compliant

Technical drawing

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

Part Options / Table

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Dimensions in: Inch | Metric
Stud length
a1a2a3d2d3d4 -0.008d5hkl2l3
M 4.592-44-88-
M 4.674-66-1010-
M 4.756-88-1212-
M 4.838-1010-1414-
M 5.712,5-44-10,510,5-
M 5.794-66-1212-
M 5.876-88-1414-
M 51.028-1212-1616-
M 6.943-66-1313-
M 61.026-88-1616-
M 61.188-1212-1818-
M 61.3412-1616-2222-
M 81.184-88-1616-
M 81.348-1212-2020-
M 81.5012-1616-2424-
M 81.6516-2020-2828-321.

Build & Price

Thread d1

Selected Part

Total USD (net)
In stock: 0
Call / Email for Delivery Time
Please note our quantity discounts (USD).
≥ 500$3.58
Weight: 0.154 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
RoHS compliant: Yes
This article conforms to RoHS, which means it complies with EU Directive 2011/65/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)).
All Prices are in US Dollars. Taxes Not Included.

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