91251A587 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

91251A587: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: KNURLED NO. 1, head_height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.469 INCHES NOMINAL IN, thread_length: 1.124 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-307-3545, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

91251A587

NSN: 5305-01-307-3545
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	KNURLED NO. 1
head_height	0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class	2A A
head_diameter	0.469 INCHES NOMINAL IN
thread_length	1.124 INCHES NOMINAL IN
fastener_length	1.500 INCHES NOMINAL IN
hardness_rating	39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_direction	RIGHT-HAND
surface_treatment	OXIDE OVERALL
width_across_flats	0.250 INCHES NOMINAL IN
internal_drive_style	HEXAGON
NSN	5305-01-307-3545

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN

•

HEAD HEIGHT: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN

•

FASTENER LENGTH: 1.500 INCHES NOMINAL IN

•

THREAD LENGTH: 1.124 INCHES NOMINAL IN

•

HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL

•

MATERIAL DOCUMENT AND CLASSIFICATION: SAE GR8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.312 INCHES IN

•

HEAD STYLE: KNURLED NO. 1

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.250 INCHES NOMINAL IN
HEAD HEIGHT	0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
FASTENER LENGTH	1.500 INCHES NOMINAL IN
THREAD LENGTH	1.124 INCHES NOMINAL IN
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE GR8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES IN
HEAD STYLE	KNURLED NO. 1
THREAD DIRECTION	RIGHT-HAND
COLOR	BLACK OVERALL

OTHER ITEMS IN FSC 5305 — Screws

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831

SUBSTITUTES & CROSS-REFERENCES 1

A0440200132KSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 91251A587?

91251A587 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 91251A587?

There is 1 known substitute for 91251A587: A0440200132K. Substitute compatibility should be verified for your specific system.

What is the NSN for 91251A587?

91251A587 is cataloged in the U.S. Government catalog under NSN 5305-01-307-3545. This indicates validated use in U.S. government and defense supply chains.

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91251A587 — SCREW,CAP,SOCKET HEAD

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