HT4056-4-8A — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

HT4056-4-8A: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN, head_diameter: 0.456 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-130-9017, 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

HT4056-4-8A

NSN: 5305-01-130-9017
FSC: 5305 — Screws
CAGE: 92215 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS (USA)

SPECIFICATIONS

material	TITANIUM ALLOY OVERALL
head_style	FLAT COUNTERSUNK
grip_length	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
head_diameter	0.456 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
thread_length	0.401 INCHES MINIMUM AND 0.451 INCHES MAXIMUM IN
surface_finish	32.0 MICROINCHES GRIP
fastener_length	0.911 INCHES MINIMUM AND 0.941 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatment	ALUMINUM OVERALL
NSN	5305-01-130-9017

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES THREADS

•

FASTENER LENGTH: 0.911 INCHES MINIMUM AND 0.941 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: PS13143,TY 2,CL 3 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.401 INCHES MINIMUM AND 0.451 INCHES MAXIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

TECHNICAL CHARACTERISTICS

SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE FINISH	32.0 MICROINCHES GRIP
FASTENER LENGTH	0.911 INCHES MINIMUM AND 0.941 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	PS13143,TY 2,CL 3 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.401 INCHES MINIMUM AND 0.451 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
GRIP LENGTH	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN

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 2

ST3M732-4L8Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

10115259Reference document

Same NSN cross-reference

Reference document — Informative reference only

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 HT4056-4-8A?

HT4056-4-8A is a SCREW,CLOSE TOLERANCE.

What parts can replace HT4056-4-8A?

There are 2 known substitutes for HT4056-4-8A: ST3M732-4L8, 10115259. Substitute compatibility should be verified for your specific system.

What is the NSN for HT4056-4-8A?

HT4056-4-8A is cataloged in the U.S. Government catalog under NSN 5305-01-130-9017. This indicates validated use in U.S. government and defense supply chains.

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