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5305-00-276-5739

Hexagon Head Cap Screw

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Official Item Classification

Name
Hexagon Head Cap Screw
(NSN) National Stock Number
5305-00-276-5739
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5305 Screws
(INC) Item Name Code
18257
(FIIG) Federal Item Identification Guide
A003B0
Date
08/08/1973 (53 years ago)

hexagon head style, right-hand thread direction, 3.562 inches minimum and 3.750 inches maximum fastener length, 2.250 inches minimum and 2.562 inches maximum thread length, 2a thread class

Specs & Compatibility

Thread Class

2a

Thread Direction

right-hand

Thread Length

2.250 inches minimum and 2.562 inches maximum

Fastener Length

3.562 inches minimum and 3.750 inches maximum

Head Style

hexagon

Head Height

0.591 inches minimum and 0.627 inches maximum

Width Between Flats

1.469 inches minimum and 1.500 inches maximum

Nominal Thread Diameter

1.000 inches

Thread Quantity Per Inch

8

Minimum Tensile Strength

150000 pounds per square inch

Hardness Rating

33.0 rockwell c minimum and 39.0 rockwell c maximum overall

Minimum Yield Strength

130000 pounds per square inch

Material

steel overall

Material Document And Classification

sae j429,grade 8 assn std single material response or astm a354,grade bd assn std single material response overall

Surface Treatment

zinc and chromate overall

Surface Treatment Document And Classification

astm b633 ty 2 sc 3 assn std single treatment response overall

Thread Series Designator

unc

Replacement For

Part Number Description
5305-00-255-4427 No Name Available 12/01/1982
5305-00-297-0718 No Name Available 08/01/1989
5305-00-550-4996 No Name Available 09/01/2023

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

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

0018257

Related Hardware Products

Part Number Description
15A00229-0000 ITEM 40 Hexagon Head Cap Screw
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B1821BH100C375N Hexagon Head Cap Screw
MS51095-516 Hexagon Head Cap Screw
MS90728-237 Hexagon Head Cap Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-00-276-5739?
The FSCG of the NSN 5305-00-276-5739 is 5305
Does the NSN 5305-00-276-5739 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-276-5739 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 5305-00-276-5739 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-276-5739 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 5305-00-276-5739 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Wed, Aug 8, 1973