Security Nuts | McMaster-Carr

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Nut Type

Tamper Resistant

Drive Style

Drilled Spanner

External Pentagon

External Square

Thread Size

Material

Stainless Steel

System of Measurement

Width

Height

Thread Pitch

Finish

Zinc Yellow-Chromate Plated

Thread Direction

Thread Spacing

Thread Type

Locking Type

For Nut Size

Diameter

RoHS

Thread Fit

Metric Class 6G

Metric Class 6H

Unified Standard Class 2B

Export Control Classification Number (ECCN)

REACH

DFARS Specialty Metals

Drive Size

Performance

Breaking Torque

Less than 100 in·lbf

100 in·lbf to 149 in·lbf

150 in·lbf to 249 in·lbf

250 in·lbf to 499 in·lbf

500 in·lbf or greater

Height After Installation

Socket Shape

Nut Diameter

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86 Products

Tamper-Resistant Nuts

Tri-Groove-Drive Tamper-Resistant Nuts

Tri-Groove-Drive Tamper-Resistant Nuts

Narrower than sloped and drilled-spanner-drive nuts to fit in tight spaces

Breakaway Tamper-Resistant Nuts

Breakaway Tamper-Resistant Nuts

Our most tamper-resistant nuts

Drilled-Spanner-Drive Tamper-Resistant Nuts

Drilled-Spanner-Drive Tamper-Resistant Nuts

A wide base and large bearing surface are good for securing large objects

Sloped Tamper-Resistant Nuts

Sloped Tamper-Resistant Nuts

Sloped sides make removal difficult with standard hand tools

Serrated-Edge-Drive Tamper-Resistant Nuts

Serrated-Edge-Drive Tamper-Resistant Nuts

Serrations dig into surfaces to resist loosening
Narrower than sloped and drilled-spanner-drive nuts to fit in tight spaces

Other Products

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)