Screw, Close Tolerance5305-01-598-1840

NSN 5305-01-598-1840 · NIIN 015981840

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-598-1840 · 5305015981840 · NIIN 015981840 · 01-598-1840 · FSC 5305 Screws

Nearby stock numbers ← 5305-01-598-1804 Screw, Cap, Socket Head · 5305-01-598-2101 Screw, Machine →

5305-01-598-1840 — Screws

Features

Screw,close Tolerance — FSC 5305
Head Height: 0.138 INCHES MAXIMUM IN
Fastener Length: 1.250 INCHES NOMINAL IN
Thread Length: 0.438 INCHES NOMINAL IN
Nominal Thread Diameter: 0.313 INCHES IN
Head Style: COUNTERSUNK CYLINDRICAL CONVEX
Thread Direction: RIGHT-HAND
Grip Length: 0.812 INCHES NOMINAL IN

Identification

NSN: 5305-01-598-1840
NIIN: 015981840
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,close Tolerance, cataloged under National Stock Number 5305-01-598-1840, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-598-1840
Item Name	Screw,close Tolerance
FSC / FSG	5305 / 53 — Screws
Status	ACTIVE
Head Height	0.138 INCHES MAXIMUM IN
Fastener Length	1.250 INCHES NOMINAL IN
Thread Length	0.438 INCHES NOMINAL IN
Nominal Thread Diameter	0.313 INCHES IN
Head Style	COUNTERSUNK CYLINDRICAL CONVEX
Thread Direction	RIGHT-HAND
Grip Length	0.812 INCHES NOMINAL IN
Grip Diameter	0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
Internal Drive Style	TRI-WING RECESS
Countersink Angle	101.0 DEGREES NOMINAL
Thread Class	3A A
Thread Quantity Per Inch	24
Material	TITANIUM ALLOY UNS R56400 OVERALL
Thread Series Designator	UNIFIED NATIONAL JOINT FINE (UNJF)
Head Major Diameter	0.635 INCHES MAXIMUM IN
Head Diameter	0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN

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
NAS4605U13	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 5305-01-598-1840?

NSN 5305-01-598-1840 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.

What are the specifications of 5305-01-598-1840?

Key specifications for 5305-01-598-1840: Head Height: 0.138 INCHES MAXIMUM IN; Fastener Length: 1.250 INCHES NOMINAL IN; Thread Length: 0.438 INCHES NOMINAL IN; Nominal Thread Diameter: 0.313 INCHES IN. 16 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-598-1840 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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