B1287-6-20 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

B1287-6-20: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.103 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, thread_length: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN, screw_material: STEEL COMP 1010. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-151-1237, 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

B1287-6-20

NSN: 5305-00-151-1237
FSC: 5305 — Screws
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)

SPECIFICATIONS

head_style	ROUND
head_height	0.103 INCHES NOMINAL IN
thread_class	2A A
head_diameter	0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
thread_length	1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
screw_material	STEEL COMP 1010
fastener_length	1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
internal_drive_style	CROSS RECESS TYPE 1
nominal_thread_diameter	0.138 INCHES IN
screw_surface_treatment	CADMIUM
minimum_tensile_strength	55000 POUNDS PER SQUARE INCH LBS
NSN	5305-00-151-1237

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.103 INCHES NOMINAL IN

•

SCREW SURFACE TREATMENT: CADMIUM

•

FASTENER LENGTH: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN

•

SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-671 FED SPEC SINGLE MATERIAL RESPONSE

•

THREAD LENGTH: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN

•

NOMINAL THREAD DIAMETER: 0.138 INCHES IN

•

HEAD STYLE: ROUND

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.103 INCHES NOMINAL IN
SCREW SURFACE TREATMENT	CADMIUM
FASTENER LENGTH	1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-671 FED SPEC SINGLE MATERIAL RESPONSE
THREAD LENGTH	1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER	0.138 INCHES IN
HEAD STYLE	ROUND
THREAD DIRECTION	RIGHT-HAND
NONDEFINITIVE SPEC/STD DATA	3 TYPE AND 1C STYLE
SCREW MATERIAL	STEEL COMP 1010

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 3

AN515-6R20Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

1027301-6-20Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

7S4-6-20Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B1287-6-20?

B1287-6-20 is a SCREW,MACHINE.

What parts can replace B1287-6-20?

There are 3 known substitutes for B1287-6-20: AN515-6R20, 1027301-6-20, 7S4-6-20. Substitute compatibility should be verified for your specific system.

What is the NSN for B1287-6-20?

B1287-6-20 is cataloged in the U.S. Government catalog under NSN 5305-00-151-1237. This indicates validated use in U.S. government and defense supply chains.

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