NSN 5305-01-552-0227 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-552-0227. Manufacturer of record part number: 5HB440.
Supplementary Features: MATERIAL SIMILAR TO GRADE 2
Head Style: HEXAGON
Thread Direction: RIGHT-HAND
Specification/standard Data: ASTM A307 GRADE A PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Identification
NSN: 5305-01-552-0227
NIIN: 015520227
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 5HB440
Manufacturer: Oshkosh Defense Llc
General Description
The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-552-0227, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5305-01-552-0227
Primary Part Number
5HB440
Item Name
Screw,cap,hexagon Head
FSC / FSG
5305 / 53 — Screws
Manufacturer
Oshkosh Defense Llc
Status
ACTIVE
Head Height
0.391 INCHES NOMINAL IN
Fastener Length
4.391 INCHES NOMINAL IN
Thread Length
4.000 INCHES NOMINAL IN
Supplementary Features
MATERIAL SIMILAR TO GRADE 2
Head Style
HEXAGON
Thread Direction
RIGHT-HAND
Specification/standard Data
ASTM A307 GRADE A PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
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 5305-01-552-0227?
NSN 5305-01-552-0227 is a Screw,cap,hexagon Head, manufactured by Oshkosh Defense Llc, classified under FSC 5305, Screws. Status: active.
What part numbers are listed for NSN 5305-01-552-0227?
NSN 5305-01-552-0227 has 2 manufacturer part numbers on file: 91309A810 (Mcmaster-Carr Supply Co), 5HB440 (Oshkosh Defense Llc).
What are the specifications of 5HB440?
Key specifications for 5HB440: Head Height: 0.391 INCHES NOMINAL IN; Fastener Length: 4.391 INCHES NOMINAL IN; Thread Length: 4.000 INCHES NOMINAL IN; Supplementary Features: MATERIAL SIMILAR TO GRADE 2. 13 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-552-0227 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.