GS553BW4-12 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

GS553BW4-12: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: RC, head_diameter: 0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN, thread_length: 0.720 INCHES NOMINAL IN, fastener_length: 0.750 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-446-1336, 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

GS553BW4-12

NSN: 5305-01-446-1336
FSC: 5305 — Screws
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
head_style	FLAT COUNTERSUNK
thread_class	RC
head_diameter	0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
thread_length	0.720 INCHES NOMINAL IN
fastener_length	0.750 INCHES MINIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	38.0 DEGREES MINIMUM AND 44.0 DEGREES MAXIMUM
width_across_flats	0.156 INCHES NOMINAL IN
internal_drive_style	HEXAGON
nominal_thread_diameter	0.250 INCHES IN
minimum_tensile_strength	150000 POUNDS PER SQUARE INCH LBS
NSN	5305-01-446-1336

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.156 INCHES NOMINAL IN

•

FASTENER LENGTH: 0.750 INCHES MINIMUM IN

•

THREAD LENGTH: 0.720 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

COLOR: BLACK OVERALL

•

MINIMUM TENSILE STRENGTH: 150000 POUNDS PER SQUARE INCH LBS

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.156 INCHES NOMINAL IN
FASTENER LENGTH	0.750 INCHES MINIMUM IN
THREAD LENGTH	0.720 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
COLOR	BLACK OVERALL
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH LBS
INTERNAL DRIVE STYLE	HEXAGON
COUNTERSINK ANGLE	38.0 DEGREES MINIMUM AND 44.0 DEGREES MAXIMUM

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

91253A540Same 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 GS553BW4-12?

GS553BW4-12 is a SCREW,CAP,SOCKET HEAD.

What parts can replace GS553BW4-12?

There is 1 known substitute for GS553BW4-12: 91253A540. Substitute compatibility should be verified for your specific system.

What is the NSN for GS553BW4-12?

GS553BW4-12 is cataloged in the U.S. Government catalog under NSN 5305-01-446-1336. This indicates validated use in U.S. government and defense supply chains.

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GS553BW4-12 — SCREW,CAP,SOCKET HEAD

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