BM21009-4H3 — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

BM21009-4H3: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, hole_type: DRILLED, head_style: PAN, grip_length: 0.188 INCHES NOMINAL IN, head_height: 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, grip_diameter: 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-042-6318, 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

BM21009-4H3

NSN: 5305-01-042-6318
FSC: 5305 — Screws
CAGE: 17446 — HUCK INTERNATIONAL, INC (USA)

SPECIFICATIONS

material	TITANIUM ALLOY UNS R54520 OVERALL
hole_type	DRILLED
head_style	PAN
grip_length	0.188 INCHES NOMINAL IN
head_height	0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
grip_diameter	0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
head_diameter	0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN
hole_diameter	0.037 INCHES NOMINAL IN
hole_quantity	2
surface_finish	63.0 MICROINCHES BEARING SURFACE OF HEAD
special_features	DRY FILM LUBRICANT
thread_direction	RIGHT-HAND
NSN	5305-01-042-6318

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 63.0 MICROINCHES GRIP

•

HEAD HEIGHT: 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN

•

HOLE CONFIGURATION STYLE: ROUND LONGITUDINAL HOLE

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

HEAD STYLE: PAN

•

THREAD DIRECTION: RIGHT-HAND

•

SPECIFICATION/STANDARD DATA: 26512-GB511J PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD

TECHNICAL CHARACTERISTICS

SURFACE FINISH	63.0 MICROINCHES GRIP
SURFACE FINISH	63.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT	0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
HOLE CONFIGURATION STYLE	ROUND LONGITUDINAL HOLE
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	PAN
THREAD DIRECTION	RIGHT-HAND
SPECIFICATION/STANDARD DATA	26512-GB511J PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
GRIP LENGTH	0.188 INCHES NOMINAL IN
GRIP DIAMETER	0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN

OTHER ITEMS IN FSC 5305 — Screws

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753

SUBSTITUTES & CROSS-REFERENCES 5

GB511J4D3Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

67077D4-3Reference document

Same NSN cross-reference

Reference document — Secondary reference

HT193LB4H3Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

HT8099-4D3Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

T151-4D3Reference document

Same NSN cross-reference

Reference document — Secondary 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 BM21009-4H3?

BM21009-4H3 is a SCREW,CLOSE TOLERANCE.

What parts can replace BM21009-4H3?

There are 5 known substitutes for BM21009-4H3: GB511J4D3, 67077D4-3, HT193LB4H3 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for BM21009-4H3?

BM21009-4H3 is cataloged in the U.S. Government catalog under NSN 5305-01-042-6318. This indicates validated use in U.S. government and defense supply chains.

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