GS551C-3-338 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

GS551C-3-338: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 OR STEEL COMP 8740 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.276 INCHES NOMINAL IN, thread_length: 0.284 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN, screw_material: STEEL COMP 4037 OR STEEL COMP 4140 OR STEEL COMP 4340. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-515-7058, 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

GS551C-3-338

NSN: 5305-00-515-7058
NIINs: 005157058, 011319832
FSC: 5305 — Screws
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)

SPECIFICATIONS

material	STEEL COMP 4037 OR STEEL COMP 8740 OVERALL
head_style	FLAT COUNTERSUNK
thread_class	2A A
head_diameter	0.276 INCHES NOMINAL IN
thread_length	0.284 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
screw_material	STEEL COMP 4037 OR STEEL COMP 4140 OR STEEL COMP 4340
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	0.579 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN
hardness_rating	33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length	0.225 INCHES MINIMUM AND 0.255 INCHES MAXIMUM FIRST SHOULDER IN
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
NSN	5305-00-515-7058

COMPONENT DIAGRAM

KEY FEATURES

•

SCREW SURFACE TREATMENT: CADMIUM

•

FASTENER LENGTH: 0.594 INCHES NOMINAL IN

•

SCREW MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES

•

THREAD LENGTH: 0.314 INCHES MINIMUM IN

•

HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

SCREW SURFACE TREATMENT	CADMIUM
FASTENER LENGTH	0.594 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION	SAE ASSN STD ALL MATERIAL RESPONSES
THREAD LENGTH	0.314 INCHES MINIMUM IN
HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
SCREW MATERIAL	STEEL COMP 4037 OR STEEL COMP 4140 OR STEEL COMP 4340
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH LBS

SUBSTITUTES & CROSS-REFERENCES 2

S100C-3-338Reference document

Same NSN cross-reference

Reference document — Secondary reference

AIC551C-3-338Same 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 GS551C-3-338?

GS551C-3-338 is a SCREW,MACHINE.

What parts can replace GS551C-3-338?

There are 2 known substitutes for GS551C-3-338: S100C-3-338, AIC551C-3-338. Substitute compatibility should be verified for your specific system.

What is the NSN for GS551C-3-338?

GS551C-3-338 is cataloged in the U.S. Government catalog under NSN 5305-00-515-7058. This indicates validated use in U.S. government and defense supply chains.

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