91830A402 — THUMBSCREW

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

91830A402: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: KNURLED NO. 2, point_style: POINTLESS, thread_class: 3A A, head_diameter: 0.500 INCHES NOMINAL IN, thread_length: 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-320-7143, 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

91830A402

NSN: 5305-01-320-7143
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL COMP 303 OVERALL
head_style	KNURLED NO. 2
point_style	POINTLESS
thread_class	3A A
head_diameter	0.500 INCHES NOMINAL IN
thread_length	0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
fastener_length	0.375 INCHES NOMINAL IN
special_features	0.437 IN. WASHER FACE DIA IN
thread_direction	RIGHT-HAND
nominal_thread_diameter	0.190 INCHES IN
thread_quantity_per_inch	32
thread_series_designator	UNF
NSN	5305-01-320-7143

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 0.375 INCHES NOMINAL IN

•

THREAD LENGTH: 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: KNURLED NO. 2

•

THREAD DIRECTION: RIGHT-HAND

•

POINT STYLE: POINTLESS

•

THREAD CLASS: 3A A

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	0.375 INCHES NOMINAL IN
THREAD LENGTH	0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	KNURLED NO. 2
THREAD DIRECTION	RIGHT-HAND
POINT STYLE	POINTLESS
SPECIAL FEATURES	0.437 IN. WASHER FACE DIA IN
THREAD CLASS	3A A
THREAD QUANTITY PER INCH	32
MATERIAL	STEEL COMP 303 OVERALL

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 1

9183CA402Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 91830A402?

91830A402 is a THUMBSCREW.

What parts can replace 91830A402?

There is 1 known substitute for 91830A402: 9183CA402. Substitute compatibility should be verified for your specific system.

What is the NSN for 91830A402?

91830A402 is cataloged in the U.S. Government catalog under NSN 5305-01-320-7143. This indicates validated use in U.S. government and defense supply chains.

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