43-S-4371-190 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

43-S-4371-190: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 8640 OVERALL, head_style: FLAT CHAMFER, head_height: 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.863 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN, thread_length: 2.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-271-5073, 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

43-S-4371-190

NSN: 5305-00-271-5073
FSC: 5305 — Screws
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)

SPECIFICATIONS

material	STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 8640 OVERALL
head_style	FLAT CHAMFER
head_height	0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.863 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
thread_length	2.000 INCHES NOMINAL IN
fastener_length	2.000 INCHES NOMINAL IN
hardness_rating	36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_direction	RIGHT-HAND
surface_treatment	ZINC OVERALL
width_across_flats	0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
internal_drive_style	HEXAGON
NSN	5305-00-271-5073

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN

•

HEAD HEIGHT: 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN

•

FASTENER LENGTH: 2.000 INCHES NOMINAL IN

•

THREAD LENGTH: 2.000 INCHES NOMINAL IN

•

HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL

•

NOMINAL THREAD DIAMETER: 0.625 INCHES IN

•

HEAD STYLE: FLAT CHAMFER

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
HEAD HEIGHT	0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
FASTENER LENGTH	2.000 INCHES NOMINAL IN
THREAD LENGTH	2.000 INCHES NOMINAL IN
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER	0.625 INCHES IN
HEAD STYLE	FLAT CHAMFER
THREAD DIRECTION	RIGHT-HAND
NONDEFINITIVE SPEC/STD DATA	1 TYPE AND 11 STYLE

SUBSTITUTES & CROSS-REFERENCES 1

FFS86TYPE1STYLE11Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 43-S-4371-190?

43-S-4371-190 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 43-S-4371-190?

There is 1 known substitute for 43-S-4371-190: FFS86TYPE1STYLE11. Substitute compatibility should be verified for your specific system.

What is the NSN for 43-S-4371-190?

43-S-4371-190 is cataloged in the U.S. Government catalog under NSN 5305-00-271-5073. This indicates validated use in U.S. government and defense supply chains.

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43-S-4371-190 — SCREW,CAP,SOCKET HEAD

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