Screw, Cap, Hexagon Head5305-01-643-4406

NSN 5305-01-643-4406 · NIIN 016434406 · Part number 92865A603

Big Bolt, Llc · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 3Q6H0

Government record, cited

NSN 5305-01-643-4406 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-643-4406. Manufacturer of record part number: 92865A603.

Also searched as 5305-01-643-4406 · 5305016434406 · NIIN 016434406 · 01-643-4406 · FSC 5305 Screws · CAGE 3Q6H0 · 92865A603

Nearby stock numbers ← 5305-01-643-4401 Screw, Shoulder · 5305-01-643-4447 Screw, Tapping →

5305-01-643-4406 — Screws

Features

Screw,cap,hexagon Head — FSC 5305
Head Height: 0.219 INCHES NOMINAL IN
Fastener Length: 4.500 INCHES NOMINAL IN
Thread Length: 4.500 INCHES NOMINAL IN
Nominal Thread Diameter: 0.312 INCHES IN
Head Style: HEXAGON
Thread Direction: RIGHT-HAND
Width Between Flats: 0.500 INCHES NOMINAL IN

Identification

NSN: 5305-01-643-4406
NIIN: 016434406
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 92865A603
Manufacturer: Big Bolt, Llc

General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-643-4406, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Big Bolt, Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-643-4406
Primary Part Number	92865A603
Item Name	Screw,cap,hexagon Head
FSC / FSG	5305 / 53 — Screws
Manufacturer	Big Bolt, Llc
Status	ACTIVE
Head Height	0.219 INCHES NOMINAL IN
Fastener Length	4.500 INCHES NOMINAL IN
Thread Length	4.500 INCHES NOMINAL IN
Nominal Thread Diameter	0.312 INCHES IN
Head Style	HEXAGON
Thread Direction	RIGHT-HAND
Width Between Flats	0.500 INCHES NOMINAL IN
Surface Treatment	ZINC OVERALL
Thread Class	2A A
Thread Quantity Per Inch	18
Thread Series Designator	UNIFIED NATIONAL COARSE (UNC)

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
92865A603	Mcmaster-Carr Supply Co (USA)
92865A603 PRIMARY	Big Bolt, Llc (USA)

No interchangeability data on file.

Other items in FSC 5305 — Screws

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

5305-00-001-5016

5305-00-001-5016 · Item name not on file

5305-00-001-9160

5305-00-001-9160 · Item name not on file

5305-00-001-9629

SCREW,ADJUSTING CLEVIS

5305-00-001-9742

5305-00-001-9742 · Item name not on file

5305-00-001-9768

SCREW,CAP,SOCKET HEAD

5305-00-003-4306

SCREW,MACHINE

5305-00-003-6694

5305-00-003-6694 · Item name not on file

5305-00-003-6753

5305-00-003-6753 · Item name not on file

Frequently Asked Questions

What is NSN 5305-01-643-4406?

NSN 5305-01-643-4406 is a Screw,cap,hexagon Head, manufactured by Big Bolt, Llc, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-643-4406?

NSN 5305-01-643-4406 has 2 manufacturer part numbers on file: 92865A603 (Mcmaster-Carr Supply Co), 92865A603 (Big Bolt, Llc).

What are the specifications of 92865A603?

Key specifications for 92865A603: Head Height: 0.219 INCHES NOMINAL IN; Fastener Length: 4.500 INCHES NOMINAL IN; Thread Length: 4.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.312 INCHES IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-643-4406 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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