8401957-3 — THUMBSCREW

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

8401957-3: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303SE OVERALL, head_style: KNURLED NO. 4, head_height: 0.500 INCHES NOMINAL IN, point_style: CONE, thread_class: 2A A, head_diameter: 0.370 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-255-4613, 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

8401957-3

NSN: 5305-01-255-4613
FSC: 5305 — Screws
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)

SPECIFICATIONS

material	STEEL COMP 303SE OVERALL
head_style	KNURLED NO. 4
head_height	0.500 INCHES NOMINAL IN
point_style	CONE
thread_class	2A A
head_diameter	0.370 INCHES NOMINAL IN
thread_length	0.380 INCHES MINIMUM IN
fastener_length	1.380 INCHES NOMINAL IN
special_features	FURNISHED WITH UNDERCUT 0.018 IN. MIN. 0.020 IN. MAX LENGTH AND 0.095 IN. MIN. 0.097 IN. MAX DIA IN
thread_direction	RIGHT-HAND
surface_treatment	PASSIVATE OVERALL
nominal_thread_diameter	0.138 INCHES IN
NSN	5305-01-255-4613

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.500 INCHES NOMINAL IN

•

FASTENER LENGTH: 1.380 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.380 INCHES MINIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.138 INCHES IN

•

HEAD STYLE: KNURLED NO. 4

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.500 INCHES NOMINAL IN
FASTENER LENGTH	1.380 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.380 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.138 INCHES IN
HEAD STYLE	KNURLED NO. 4
THREAD DIRECTION	RIGHT-HAND
POINT STYLE	CONE
SPECIAL FEATURES	FURNISHED WITH UNDERCUT 0.018 IN. MIN. 0.020 IN. MAX LENGTH AND 0.095 IN. MIN. 0.097 IN. MAX DIA 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

No substitute or cross-reference records for this part.

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 8401957-3?

8401957-3 is a THUMBSCREW.

What is the NSN for 8401957-3?

8401957-3 is cataloged in the U.S. Government catalog under NSN 5305-01-255-4613. This indicates validated use in U.S. government and defense supply chains.

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8401957-3 — THUMBSCREW

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