734675-21 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

734675-21: 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: 0.359 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN, thread_length: 0.135 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN, fastener_length: 0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-147-9768, 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

734675-21

NSN: 5305-01-147-9768
FSC: 5305 — Screws
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.359 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
thread_length	0.135 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
fastener_length	0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
hardness_rating	36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_direction	RIGHT-HAND
countersink_angle	80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM
surface_treatment	ZINC AND CHROMATE OVERALL
width_across_flats	0.125 INCHES NOMINAL IN
internal_drive_style	HEXAGON
NSN	5305-01-147-9768

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.125 INCHES NOMINAL IN

•

FASTENER LENGTH: 0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325,TY2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.135 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN

•

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

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.125 INCHES NOMINAL IN
FASTENER LENGTH	0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-Z-325,TY2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.135 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
NONDEFINITIVE SPEC/STD DATA	4 TYPE
SURFACE TREATMENT	ZINC AND CHROMATE 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

FF-S-86Reference document

Same NSN cross-reference

Reference document — Identification reference

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 734675-21?

734675-21 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 734675-21?

There is 1 known substitute for 734675-21: FF-S-86. Substitute compatibility should be verified for your specific system.

What is the NSN for 734675-21?

734675-21 is cataloged in the U.S. Government catalog under NSN 5305-01-147-9768. This indicates validated use in U.S. government and defense supply chains.

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734675-21 — SCREW,CAP,SOCKET HEAD

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