ST3M40V4-8ASM — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

ST3M40V4-8ASM: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R56400 OR TITANIUM ALLOY UNS R56440 OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, grip_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, head_height: 0.1060 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-374-5945, 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

ST3M40V4-8ASM

NSN: 5305-01-374-5945
FSC: 5305 — Screws
CAGE: 17446 — HUCK INTERNATIONAL, INC (USA)

SPECIFICATIONS

material	TITANIUM ALLOY UNS R56400 OR TITANIUM ALLOY UNS R56440 OVERALL
head_style	FLAT COUNTERSUNK UNDERCUT
grip_length	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
head_height	0.1060 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
head_diameter	0.5018 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM IN
thread_length	0.469 INCHES NOMINAL IN
surface_finish	32.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length	0.963 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
NSN	5305-01-374-5945

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES THREADS

•

HEAD HEIGHT: 0.1060 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.963 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.469 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

FEATURES PROVIDED: DRY FILM LUBRICANT AND O RING

•

HEAD STYLE: FLAT COUNTERSUNK UNDERCUT

TECHNICAL CHARACTERISTICS

SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT	0.1060 INCHES MINIMUM AND 0.1080 INCHES MAXIMUM IN
FASTENER LENGTH	0.963 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN
THREAD LENGTH	0.469 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.250 INCHES IN
FEATURES PROVIDED	DRY FILM LUBRICANT AND O RING
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
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 3

110179-4-8ASMSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

HT8137-4-8ASMReference document

Same NSN cross-reference

Reference document — Secondary reference

ST3M430V4-8ASMSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 ST3M40V4-8ASM?

ST3M40V4-8ASM is a SCREW,CLOSE TOLERANCE.

What parts can replace ST3M40V4-8ASM?

There are 3 known substitutes for ST3M40V4-8ASM: 110179-4-8ASM, HT8137-4-8ASM, ST3M430V4-8ASM. Substitute compatibility should be verified for your specific system.

What is the NSN for ST3M40V4-8ASM?

ST3M40V4-8ASM is cataloged in the U.S. Government catalog under NSN 5305-01-374-5945. This indicates validated use in U.S. government and defense supply chains.

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