Nonmachine Nominal Thread Diameter: 0.312 INCHES IN
Head Height: 0.220 INCHES NOMINAL IN
Fastener Length: 0.834 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
Nonmachine Thread Style: DOG TYPE (TYPE B OR C)
Head Style: HEXAGON
Width Between Flats: 0.490 INCHES NOMINAL IN
Surface Treatment: ZINC OR CADMIUM OVERALL
Identification
NSN: 5305-01-291-2250
NIIN: 012912250
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
General Description
The Screw,tapping, cataloged under National Stock Number 5305-01-291-2250, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
5305-01-291-2250
Item Name
Screw,tapping
FSC / FSG
5305 / 53 — Screws
Status
ACTIVE
Nonmachine Nominal Thread Diameter
0.312 INCHES IN
Head Height
0.220 INCHES NOMINAL IN
Fastener Length
0.834 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
Nonmachine Thread Style
DOG TYPE (TYPE B OR C)
Head Style
HEXAGON
Width Between Flats
0.490 INCHES NOMINAL IN
Surface Treatment
ZINC OR CADMIUM OVERALL
Internal Drive Style
SLOT
Material
STEEL OVERALL
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
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
8524778-02
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 5305 — Screws
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 5305-01-291-2250?
NSN 5305-01-291-2250 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
What are the specifications of 5305-01-291-2250?
Key specifications for 5305-01-291-2250: Nonmachine Nominal Thread Diameter: 0.312 INCHES IN; Head Height: 0.220 INCHES NOMINAL IN; Fastener Length: 0.834 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Nonmachine Thread Style: DOG TYPE (TYPE B OR C). 9 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-291-2250 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.