Screw, Cap, Hexagon Head5305-01-550-3891

NSN 5305-01-550-3891 · NIIN 015503891

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-550-3891 · 5305015503891 · NIIN 015503891 · 01-550-3891 · FSC 5305 Screws · 5D87696FN12 · 522C506108

Nearby stock numbers ← 5305-01-550-3875 Screw, Cap, Hexagon Head · 5305-01-550-3901 Screw, Cap, Hexagon Head →

5305-01-550-3891 — Screws

Features

Screw,cap,hexagon Head — FSC 5305
Head Height: 0.378 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
Fastener Length: 1.500 INCHES NOMINAL IN
Thread Length: 1.500 INCHES NOMINAL IN
Nominal Thread Diameter: 0.625 INCHES IN
Head Style: HEXAGON
Thread Direction: RIGHT-HAND
Width Between Flats: 0.922 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN

Identification

NSN: 5305-01-550-3891
NIIN: 015503891
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-550-3891, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-550-3891
Item Name	Screw,cap,hexagon Head
FSC / FSG	5305 / 53 — Screws
Status	ACTIVE
Head Height	0.378 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
Fastener Length	1.500 INCHES NOMINAL IN
Thread Length	1.500 INCHES NOMINAL IN
Nominal Thread Diameter	0.625 INCHES IN
Head Style	HEXAGON
Thread Direction	RIGHT-HAND
Width Between Flats	0.922 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
Nondefinitive Spec/std Data	1 TYPE AND B7 GRADE TYPE
Thread Class	2A A
Thread Quantity Per Inch	11
Material	STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OVERALL
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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
5D87696FN12	5/2 Secondary reference U.S. Government activity
522C506108	3/2 Design control — primary reference U.S. Government activity

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 5305-01-550-3891?

NSN 5305-01-550-3891 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.

What are the specifications of 5305-01-550-3891?

Key specifications for 5305-01-550-3891: Head Height: 0.378 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN; Fastener Length: 1.500 INCHES NOMINAL IN; Thread Length: 1.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.625 INCHES IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-550-3891 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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