PartsTable TECHNICAL DATA SHEET

NSN 5305-01-331-0870Government record, cited

Screw, Machine5305-01-331-0870

NSN 5305-01-331-0870 · NIIN 013310870

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-331-0870 · 5305013310870 · NIIN 013310870 · 01-331-0870 · FSC 5305 Screws · 74B059320-101 · CTS276A-1-0 · CTS276A-1-0

Nearby stock numbers ← 5305-01-331-0655 Screw, Machine · 5305-01-331-1152 Screw, Machine →

5305-01-331-0870 — Screws

Features

Screw,machine — FSC 5305
Head Height: 0.188 INCHES NOMINAL IN
Fastener Length: 1.000 INCHES NOMINAL IN
Hardness Rating: 61.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM
Nominal Thread Diameter: 0.188 INCHES IN
Head Style: CROWNED HEXAGON
Width Between Flats: 0.250 INCHES NOMINAL IN
Color: BLACK

Identification

NSN: 5305-01-331-0870
NIIN: 013310870
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,machine, cataloged under National Stock Number 5305-01-331-0870, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	5305-01-331-0870
Item Name	Screw,machine
FSC / FSG	5305 / 53 — Screws
Status	ACTIVE
Head Height	0.188 INCHES NOMINAL IN
Fastener Length	1.000 INCHES NOMINAL IN
Hardness Rating	61.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM
Nominal Thread Diameter	0.188 INCHES IN
Head Style	CROWNED HEXAGON
Width Between Flats	0.250 INCHES NOMINAL IN
Color	BLACK

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
74B059320-101	7/2 Vendor item drawing reference The Boeing Company Div Defense
CTS276A-1-0	3/2 Design control — primary reference U.S. Government activity
CTS276A-1-0	5/9 Secondary reference The Boeing Company Div Defense

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.

5305-00-000-0094

SCREW,CLOSE TOLERANCE

5305-00-000-0094

SCREW,CLOSE TOLERANCE

5305-00-000-0094

SCREW,CLOSE TOLERANCE

5305-00-000-1397

5305-00-000-1397 · Item name not on file

5305-00-000-2625

5305-00-000-2625 · Item name not on file

5305-00-000-3669

5305-00-000-3669 · Item name not on file

5305-00-000-3830

5305-00-000-3830 · Item name not on file

5305-00-000-3831

5305-00-000-3831 · Item name not on file

Frequently Asked Questions

What is NSN 5305-01-331-0870?

NSN 5305-01-331-0870 is a Screw,machine, classified under FSC 5305, Screws. Status: active.

What are the specifications of 5305-01-331-0870?

Key specifications for 5305-01-331-0870: Head Height: 0.188 INCHES NOMINAL IN; Fastener Length: 1.000 INCHES NOMINAL IN; Hardness Rating: 61.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM; Nominal Thread Diameter: 0.188 INCHES IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-331-0870 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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