PartsTable TECHNICAL DATA SHEET

NSN 5305-01-671-0016Government record, cited

Screw, Cap, Socket Head5305-01-671-0016

NSN 5305-01-671-0016 · NIIN 016710016

FSC 5305 — Screws · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5305-01-671-0016 · 5305016710016 · NIIN 016710016 · 01-671-0016 · FSC 5305 Screws · NAS1351C4LB28 · NAS1351

Nearby stock numbers ← 5305-01-670-9978 Thumbscrew · 5305-01-671-0125 Setscrew →

5305-01-671-0016 — Screws

Features

Screw,cap,socket Head — FSC 5305
Width Across Flats: 0.188 INCHES NOMINAL IN
Head Height: 0.244 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Fastener Length: 1.750 INCHES NOMINAL IN
Thread Length: 1.000 INCHES NOMINAL IN
Hole Configuration Style: ROUND INTERNAL HEXAGON
Nominal Thread Diameter: 0.250 INCHES IN
Head Style: FLAT CHAMFER

Identification

NSN: 5305-01-671-0016
NIIN: 016710016
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives

General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-671-0016, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-671-0016
Item Name	Screw,cap,socket Head
FSC / FSG	5305 / 53 — Screws
Status	ACTIVE
Width Across Flats	0.188 INCHES NOMINAL IN
Head Height	0.244 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Fastener Length	1.750 INCHES NOMINAL IN
Thread Length	1.000 INCHES NOMINAL IN
Hole Configuration Style	ROUND INTERNAL HEXAGON
Nominal Thread Diameter	0.250 INCHES IN
Head Style	FLAT CHAMFER
Thread Direction	RIGHT-HAND
Locking Feature	SELF-LOCKING THREADS
Internal Drive Style	HEXAGON
Thread Class	3A A
Thread Quantity Per Inch	28
Material	STEEL CORROSION RESISTING OVERALL
Hole Quantity	4
Thread Series Designator	UNRF
Hole Type	DRILLED
Hole Diameter	0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
Head Diameter	0.365 INCHES MINIMUM AND 0.375 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

⇄ Related Items 6

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5305-01-671-1052NAS1351C6LB12 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5305-01-671-1054NAS1351C6LB16 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5305-01-733-6362NAS1351N12-88G POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5305-01-733-6392NAS1351N5H14G POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5305-01-734-1693NAS1351-4LE8 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5305-01-734-3465NAS1351N06-16 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

Cross-Reference Index

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

Reference documents

Reference	Meaning
NAS1351C4LB28	3/2 Design control — primary reference U.S. Government activity
NAS1351	3/1 Design control — primary reference U.S. Government activity

Related Parts

5305-01-671-1052POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

NAS1351C6LB12

5305-01-671-1054POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

NAS1351C6LB16

5305-01-733-6362POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

NAS1351N12-88G

5305-01-733-6392POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

NAS1351N5H14G

5305-01-734-1693POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

NAS1351-4LE8

5305-01-734-3465POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

NAS1351N06-16

Frequently Asked Questions

What is NSN 5305-01-671-0016?

NSN 5305-01-671-0016 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.

What NSN replaces 5305-01-671-0016?

6 possible matches (shared part number, not a government interchangeability claim): 5305-01-671-1052, 5305-01-671-1054, 5305-01-733-6362. Verify interchangeability with system specifications before substitution.

What are the specifications of 5305-01-671-0016?

Key specifications for 5305-01-671-0016: Width Across Flats: 0.188 INCHES NOMINAL IN; Head Height: 0.244 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN; Fastener Length: 1.750 INCHES NOMINAL IN; Thread Length: 1.000 INCHES NOMINAL IN. 18 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-671-0016 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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