91253A628 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

91253A628: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.781 INCHES NOMINAL IN, thread_length: 1.250 INCHES NOMINAL IN, fastener_length: 1.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-333-8052, 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

91253A628

NSN: 5305-01-333-8052
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.781 INCHES NOMINAL IN
thread_length	1.250 INCHES NOMINAL IN
fastener_length	1.500 INCHES NOMINAL IN
hardness_rating	36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_direction	RIGHT-HAND
countersink_angle	82.0 DEGREES NOMINAL
surface_treatment	OXIDE OVERALL
width_across_flats	0.219 INCHES NOMINAL IN
internal_drive_style	HEXAGON
NSN	5305-01-333-8052

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.219 INCHES NOMINAL IN

•

FASTENER LENGTH: 1.500 INCHES NOMINAL IN

•

THREAD LENGTH: 1.250 INCHES NOMINAL IN

•

HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL

•

MATERIAL DOCUMENT AND CLASSIFICATION: SAE J429 GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.375 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.219 INCHES NOMINAL IN
FASTENER LENGTH	1.500 INCHES NOMINAL IN
THREAD LENGTH	1.250 INCHES NOMINAL IN
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE J429 GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.375 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
SURFACE TREATMENT	OXIDE OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH LBS

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

33-215-016Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 91253A628?

91253A628 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 91253A628?

There is 1 known substitute for 91253A628: 33-215-016. Substitute compatibility should be verified for your specific system.

What is the NSN for 91253A628?

91253A628 is cataloged in the U.S. Government catalog under NSN 5305-01-333-8052. This indicates validated use in U.S. government and defense supply chains.

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91253A628 — SCREW,CAP,SOCKET HEAD

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