NSN 5305-01-640-6774 · NIIN 016406774 · Part number 91180A643
Mcmaster-Carr Supply Co · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 39428
Government record, cited
NSN 5305-01-640-6774 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-640-6774. Manufacturer of record part number: 91180A643.
Also searched as5305-01-640-6774 ·
5305016406774 ·
NIIN 016406774 ·
01-640-6774 ·
FSC 5305 Screws · CAGE 39428 · 91180A643
Nearby stock numbers← 5305-01-640-6737 Screw, Cap, Hexagon Head
·
5305-01-640-6777 Screw, Cap, Socket Head →
5305-01-640-6774 — Screws
Features
Screw,cap,hexagon Head — FSC 5305
Head Height: 6.4 MILLIMETERS NOMINAL MM
External Thread Tolerance Class: 6H
Fastener Length: 55.0 MILLIMETERS NOMINAL MM
Thread Pitch in Millimeters: 1.25
Thread Length: 26.0 MILLIMETERS MINIMUM AND 34.0 MILLIMETERS MAXIMUM MM
Head Style: HEXAGON
Thread Direction: RIGHT-HAND
Identification
NSN: 5305-01-640-6774
NIIN: 016406774
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 91180A643
Manufacturer: Mcmaster-Carr Supply Co
General Description
The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-640-6774, 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
5305-01-640-6774
Primary Part Number
91180A643
Item Name
Screw,cap,hexagon Head
FSC / FSG
5305 / 53 — Screws
Manufacturer
Mcmaster-Carr Supply Co
Status
ACTIVE
Head Height
6.4 MILLIMETERS NOMINAL MM
External Thread Tolerance Class
6H
Fastener Length
55.0 MILLIMETERS NOMINAL MM
Thread Pitch in Millimeters
1.25
Thread Length
26.0 MILLIMETERS MINIMUM AND 34.0 MILLIMETERS MAXIMUM MM
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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5305-00-001-9742 · Item name not on file
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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 5305-01-640-6774?
NSN 5305-01-640-6774 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 5305-01-640-6774?
NSN 5305-01-640-6774 has 1 manufacturer part number on file: 91180A643 (Mcmaster-Carr Supply Co).
What are the specifications of 91180A643?
Key specifications for 91180A643: Head Height: 6.4 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6H; Fastener Length: 55.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.25. 11 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-640-6774 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.