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B4H26A Machine Bolt

5306-00-182-2020

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Official Item Classification

Name
Machine Bolt
Part Number
B4H26A
(NSN) National Stock Number
5306-00-182-2020
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5306 Bolts
(INC) Item Name Code
01847
(FIIG) Federal Item Identification Guide
A003B0
Date
01/01/1963 (63 years ago)

2.781 inches nominal fastener length, right-hand thread direction, hexagon head style, 3a thread class, 0.469 inches minimum thread length

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.469 inches minimum

Fastener Length

2.781 inches nominal

Head Style

hexagon

Head Height

0.140 inches minimum and 0.172 inches maximum

Width Between Flats

0.428 inches minimum and 0.440 inches maximum

Hole Diameter

0.046 inches nominal

Nominal Thread Diameter

0.250 inches

Grip Length

2.312 inches nominal

Hole Quantity

1

Hole Type

drilled

Features Provided

finished head

Thread Quantity Per Inch

28

Minimum Tensile Strength

125000 pounds per square inch

Hardness Rating

26.0 rockwell c minimum and 32.0 rockwell c maximum overall

Hole Configuration Style

hexagon flats

Material

steel comp 4037 or steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740 or steel comp 4140 overall

Material Document And Classification

mil-b-6812 mil spec all material responses overall

Surface Treatment

cadmium and chromate overall

Surface Treatment Document And Classification

qq-p-416,type 2,class 3 fed spec all treatment responses overall

Thread Series Designator

unf

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

0001847

Related Hardware Products

Part Number Description
AN4H26A Machine Bolt
B4H26A Machine Bolt

Frequently Asked Questions

What is the FSCG of the NSN 5306-00-182-2020?
The FSCG of the NSN 5306-00-182-2020 is 5306
Does the NSN 5306-00-182-2020 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-00-182-2020 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 5306-00-182-2020 contain precious materials?
Precious metal content is unknown
Does NSN 5306-00-182-2020 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 5306-00-182-2020 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963