PartsTable TECHNICAL DATA SHEET
NSN 5305-01-604-6956Government record, cited

Setscrew5305-01-604-6956

NSN 5305-01-604-6956 · NIIN 016046956 · Part number 90251A531
Mcmaster-Carr Supply Co · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 39428
Government record, cited
NSN 5305-01-604-6956 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-604-6956. Manufacturer of record part number: 90251A531.
Also searched as  5305-01-604-6956 · 5305016046956 · NIIN 016046956 · 01-604-6956 · FSC 5305 Screws · CAGE 39428 · 90251A531
Nearby stock numbers  ·
Features
  • Setscrew — FSC 5305
  • Point Diameter: 0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
  • Width Across Flats: 0.125 INCHES NOMINAL IN
  • Fastener Length: 0.188 INCHES NOMINAL IN
  • Point Chamfer Angle: 118.0 DEGREES NOMINAL
  • Nominal Thread Diameter: 0.250 INCHES IN
  • Head Style: HEADLESS (SETSCREW)
  • Thread Direction: RIGHT-HAND
Identification
  • NSN: 5305-01-604-6956
  • NIIN: 016046956
  • FSC: 5305 — Screws
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 90251A531
  • Manufacturer: Mcmaster-Carr Supply Co
General Description

The Setscrew, cataloged under National Stock Number 5305-01-604-6956, 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 14 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
ParameterValue
NSN5305-01-604-6956
Primary Part Number90251A531
Item NameSetscrew
FSC / FSG5305 / 53 — Screws
ManufacturerMcmaster-Carr Supply Co
StatusACTIVE
Point Diameter0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
Width Across Flats0.125 INCHES NOMINAL IN
Fastener Length0.188 INCHES NOMINAL IN
Point Chamfer Angle118.0 DEGREES NOMINAL
Nominal Thread Diameter0.250 INCHES IN
Head StyleHEADLESS (SETSCREW)
Thread DirectionRIGHT-HAND
Point StyleCUP
Locking FeaturePATCH LOCKING FEATURE
Internal Drive StyleHEXAGON
Thread Class3A A
Thread Quantity Per Inch20
MaterialSTEEL COMP 302 OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
90251A531 Mcmaster-Carr Supply Company (USA)
90251A531 PRIMARY Mcmaster-Carr Supply Co (USA)
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 5305-01-604-6956?

NSN 5305-01-604-6956 is a Setscrew, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-604-6956?

NSN 5305-01-604-6956 has 2 manufacturer part numbers on file: 90251A531 (Mcmaster-Carr Supply Company), 90251A531 (Mcmaster-Carr Supply Co).

What are the specifications of 90251A531?

Key specifications for 90251A531: Point Diameter: 0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN; Width Across Flats: 0.125 INCHES NOMINAL IN; Fastener Length: 0.188 INCHES NOMINAL IN; Point Chamfer Angle: 118.0 DEGREES NOMINAL. 14 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-604-6956 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