Screw, Cap, Socket Head5305-01-666-5748

NSN 5305-01-666-5748 · NIIN 016665748 · Part number 91251A880

Mcmaster-Carr Supply Co · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 39428

Government record, cited

NSN 5305-01-666-5748 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-666-5748. Manufacturer of record part number: 91251A880.

Also searched as 5305-01-666-5748 · 5305016665748 · NIIN 016665748 · 01-666-5748 · FSC 5305 Screws · CAGE 39428 · 91251A880 · SHX-1432

Nearby stock numbers ← 5305-01-666-5738 Screw, Machine · 5305-01-666-5802 Screw, Cap, Socket Head →

5305-01-666-5748 — Screws

Features

Screw,cap,socket Head — FSC 5305
Width Across Flats: 0.750 INCHES NOMINAL IN
Head Height: 0.875 INCHES NOMINAL IN
Fastener Length: 2.87 INCHES NOMINAL IN
Thread Length: 2.0 INCHES NOMINAL IN
Nominal Thread Diameter: 0.875 INCHES IN
Head Style: FLAT CHAMFER
Thread Direction: RIGHT-HAND

Identification

NSN: 5305-01-666-5748
NIIN: 016665748
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 91251A880
Manufacturer: Mcmaster-Carr Supply Co

General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-666-5748, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 15 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5305-01-666-5748
Primary Part Number	91251A880
Item Name	Screw,cap,socket Head
FSC / FSG	5305 / 53 — Screws
Manufacturer	Mcmaster-Carr Supply Co
Status	ACTIVE
Width Across Flats	0.750 INCHES NOMINAL IN
Head Height	0.875 INCHES NOMINAL IN
Fastener Length	2.87 INCHES NOMINAL IN
Thread Length	2.0 INCHES NOMINAL IN
Nominal Thread Diameter	0.875 INCHES IN
Head Style	FLAT CHAMFER
Thread Direction	RIGHT-HAND
Color	BLACK OVERALL
Surface Treatment	OXIDE OVERALL
Internal Drive Style	HEXAGON
Thread Class	3A A
Thread Quantity Per Inch	9
Material	STEEL OVERALL
Thread Series Designator	UNIFIED NATIONAL COARSE (UNC)
Head Diameter	1.312 INCHES NOMINAL 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

Part Number	Manufacturer
91251A880 PRIMARY	Mcmaster-Carr Supply Co (USA)
SHX-1432	Bermingham Construction Ltd Div Bermingham Foundation Equipment (CAN)

Frequently Asked Questions

What is NSN 5305-01-666-5748?

NSN 5305-01-666-5748 is a Screw,cap,socket Head, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-666-5748?

NSN 5305-01-666-5748 has 2 manufacturer part numbers on file: 91251A880 (Mcmaster-Carr Supply Co), SHX-1432 (Bermingham Construction Ltd Div Bermingham Foundation Equipment).

What are the specifications of 91251A880?

Key specifications for 91251A880: Width Across Flats: 0.750 INCHES NOMINAL IN; Head Height: 0.875 INCHES NOMINAL IN; Fastener Length: 2.87 INCHES NOMINAL IN; Thread Length: 2.0 INCHES NOMINAL IN. 15 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-666-5748 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.

PartsTable Design LLC · partstable.com