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CBS811-06-4 Socket Head Cap Screw

5305-00-321-9051

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Official Item Classification

Name
Socket Head Cap Screw
Part Number
CBS811-06-4
(NSN) National Stock Number
5305-00-321-9051
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5305 Screws
(INC) Item Name Code
16282
(FIIG) Federal Item Identification Guide
A003B0
Date
11/21/1973 (52 years ago)

3a thread class, right-hand thread direction, 0.234 inches minimum and 0.266 inches maximum fastener length, flat chamfer head style, 0.172 inches minimum and 0.266 inches maximum thread length

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.172 inches minimum and 0.266 inches maximum

Fastener Length

0.234 inches minimum and 0.266 inches maximum

Head Style

flat chamfer

Head Diameter

0.218 inches minimum and 0.226 inches maximum

Head Height

0.134 inches minimum and 0.138 inches maximum

Internal Drive Style

hexagon

Nominal Thread Diameter

0.138 inches

Width Across Flats

0.109 inches minimum and 0.111 inches maximum

Thread Quantity Per Inch

32

Minimum Tensile Strength

160000 pounds per square inch

Material

iron alloy 660 overall

Material Document And Classification

ams 5737 assn std single material response overall

Surface Treatment

passivate overall

Surface Treatment Document And Classification

qq-p-35 fed spec single treatment response overall

Thread Series Designator

unjc

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0016282

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Frequently Asked Questions

What is the FSCG of the NSN 5305-00-321-9051?
The FSCG of the NSN 5305-00-321-9051 is 5305
Does the NSN 5305-00-321-9051 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-321-9051 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5305-00-321-9051 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-321-9051 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5305-00-321-9051 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Wed, Nov 21, 1973