NO.6334 Extension Nuts Steel


 NO.6334 Steel Extension Nuts

Product description


Extension nuts NO.6334 are used for joining T-slot bolts DIN 787 or double ended threaded studs DIN 6379, to set up work on machine tools.

For functional and safety purposes, bolts and / or studs to be coupled should be screwed in on either side to half the length of the nut. Minimum thread reach should be 1 x d1.


Inch size
Cold finished steel
  • Grade 2
  • Case-hardened
  • Black oxide finish

Metric size
Tempered steel
  • Property class 10
  • m = 3 x d1

RoHS compliant

Technical drawing

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 NO.6334 Steel Extension Nuts sketch

Part Options / Table

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Dimensions in: Inch (change to Metric)
Across flats
1/4 x 200.560.6490.88
5/16 x 180.560.6490.88
3/8 x 160.690.7941.13
1/2 x 130.881.0101.50
5/8 x 111.061.2301.75
3/4 x 101.251.4402.00
7/8 x 91.381.5902.25
1 x 81.501.7302.50
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Dimensions in: Inch (change to Metric)
Across flats
M 60.390.4530.71
M 80.510.5670.94
M 100.630.7011.18
M 100.670.7441.18
M 120.710.7871.42
M 120.750.8311.42
M 140.830.9211.65
M 140.870.9651.65
M 160.941.0551.89
M 181.061.1852.13
M 201.181.3192.36
M 221.341.4842.60
M 221.261.4062.60
M 241.421.5752.83
M 271.611.7953.19
M 301.812.0203.54
M 362.172.4134.25
M 422.562.8584.96
M 482.953.3035.67

Build & Price

3D Product Configurator
Thread d1



Across flats s

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Total US Dollars (net)
In Stock: 20
In Stock
Please note our quantity discounts (US Dollars).
≥ 500$3.90
Prop 65: Not compliant
Cancer and Reproductive Harm -
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: 0.206 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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