51B221-15H — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

51B221-15H: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.381 INCHES MAXIMUM IN, thread_length: 0.261 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN, screw_material: STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP 6150 OR STEEL COMP 8735. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-809-3053, 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

51B221-15H

NSN: 5305-00-809-3053
FSC: 5305 — Screws
CAGE: 79U29 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)

SPECIFICATIONS

head_style	ROUND
head_height	0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.381 INCHES MAXIMUM IN
thread_length	0.261 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
screw_material	STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP 6150 OR STEEL COMP 8735
fastener_length	1.213 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
internal_drive_style	TORQUE SET
shank_surface_finish	32.0 MICROINCHES
nominal_thread_diameter	0.190 INCHES IN
screw_surface_treatment	CADMIUM AND CHROMATE
NSN	5305-00-809-3053

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN

•

SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE

•

FASTENER LENGTH: 1.213 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.261 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN

•

SHANK SURFACE FINISH: 32.0 MICROINCHES

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: ROUND

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
SCREW SURFACE TREATMENT	CADMIUM AND CHROMATE
FASTENER LENGTH	1.213 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
THREAD LENGTH	0.261 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
SHANK SURFACE FINISH	32.0 MICROINCHES
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	ROUND
THREAD DIRECTION	RIGHT-HAND
SCREW MATERIAL	STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 4140 OR STEEL COMP 6150 OR STEEL COMP 8735
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH LBS

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

No substitute or cross-reference records for this part.

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 51B221-15H?

51B221-15H is a SCREW,MACHINE.

What is the NSN for 51B221-15H?

51B221-15H is cataloged in the U.S. Government catalog under NSN 5305-00-809-3053. This indicates validated use in U.S. government and defense supply chains.

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51B221-15H — SCREW,MACHINE

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