Screw, Machine5305-01-459-4739

NSN 5305-01-459-4739 · NIIN 014594739 · Part number M-4-18-20

Bird-Johnson Propeller Company, Llc · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 07309

Government record, cited

NSN 5305-01-459-4739 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-459-4739. Manufacturer of record part number: M-4-18-20.

Also searched as 5305-01-459-4739 · 5305014594739 · NIIN 014594739 · 01-459-4739 · FSC 5305 Screws · CAGE 07309 · M-4-18-20 · M-5-2-7

Nearby stock numbers ← 5305-01-459-4738 Screw, Cap, Socket Head · 5305-01-459-4745 Screw, Machine →

5305-01-459-4739 — Screws

Features

Screw,machine — FSC 5305
Thread Length: 0.250 INCHES NOMINAL IN
Nominal Thread Diameter: 0.138 INCHES IN
Thread Direction: RIGHT-HAND
Screw Material: STEEL
Thread Class: 2A A
Thread Quantity Per Inch: 32
Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)

Identification

NSN: 5305-01-459-4739
NIIN: 014594739
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: M-4-18-20
Manufacturer: Bird-Johnson Propeller Company, Llc

General Description

The Screw,machine, cataloged under National Stock Number 5305-01-459-4739, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	5305-01-459-4739
Primary Part Number	M-4-18-20
Item Name	Screw,machine
FSC / FSG	5305 / 53 — Screws
Manufacturer	Bird-Johnson Propeller Company, Llc
Status	ACTIVE
Thread Length	0.250 INCHES NOMINAL IN
Nominal Thread Diameter	0.138 INCHES IN
Thread Direction	RIGHT-HAND
Screw Material	STEEL
Thread Class	2A A
Thread Quantity Per Inch	32
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
M-4-18-20 PRIMARY	Bird-Johnson Propeller Company, Llc (USA)
M-4-18-20	Rolls Royce Australia Services Pty Limited (AUS)

Reference documents

Reference	Meaning
M-5-2-7	3/9 Design control — primary reference Bird-Johnson Propeller Company, Llc

Frequently Asked Questions

What is NSN 5305-01-459-4739?

NSN 5305-01-459-4739 is a Screw,machine, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-459-4739?

NSN 5305-01-459-4739 has 2 manufacturer part numbers on file: M-4-18-20 (Bird-Johnson Propeller Company, Llc), M-4-18-20 (Rolls Royce Australia Services Pty Limited).

What are the specifications of M-4-18-20?

Key specifications for M-4-18-20: Thread Length: 0.250 INCHES NOMINAL IN; Nominal Thread Diameter: 0.138 INCHES IN; Thread Direction: RIGHT-HAND; Screw Material: STEEL. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-459-4739 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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