NSN 5305-01-641-6947 · NIIN 016416947 · Part number 91257A640
Mcmaster-Carr Supply Co · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 39428
Government record, cited
NSN 5305-01-641-6947 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-641-6947. Manufacturer of record part number: 91257A640.
Also searched as5305-01-641-6947 ·
5305016416947 ·
NIIN 016416947 ·
01-641-6947 ·
FSC 5305 Screws · CAGE 39428 · 91257A640
Thread Length: 1.0000 INCHES MINIMUM AND 1.3125 INCHES MAXIMUM IN
Nominal Thread Diameter: 0.3750 INCHES IN
Head Style: HEXAGON
Thread Direction: RIGHT-HAND
Width Between Flats: 0.5625 MILLIMETERS NOMINAL MM
Identification
NSN: 5305-01-641-6947
NIIN: 016416947
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 91257A640
Manufacturer: Mcmaster-Carr Supply Co
General Description
The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-641-6947, 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 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5305-01-641-6947
Primary Part Number
91257A640
Item Name
Screw,cap,hexagon Head
FSC / FSG
5305 / 53 — Screws
Manufacturer
Mcmaster-Carr Supply Co
Status
ACTIVE
Head Height
0.250 MILLIMETERS NOMINAL MM
Fastener Length
4.0 INCHES NOMINAL IN
Thread Length
1.0000 INCHES MINIMUM AND 1.3125 INCHES MAXIMUM IN
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 5305-01-641-6947?
NSN 5305-01-641-6947 is a Screw,cap,hexagon Head, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
What part numbers are listed for NSN 5305-01-641-6947?
NSN 5305-01-641-6947 has 1 manufacturer part number on file: 91257A640 (Mcmaster-Carr Supply Co).
What are the specifications of 91257A640?
Key specifications for 91257A640: Head Height: 0.250 MILLIMETERS NOMINAL MM; Fastener Length: 4.0 INCHES NOMINAL IN; Thread Length: 1.0000 INCHES MINIMUM AND 1.3125 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.3750 INCHES IN. 11 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-641-6947 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.