PartsTable TECHNICAL DATA SHEET
NSN 5305-01-659-9957Government record, cited

Screw, Shoulder5305-01-659-9957

NSN 5305-01-659-9957 · NIIN 016599957 · Part number 91259A851
Mcmaster-Carr Supply Co · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 39428
Government record, cited
NSN 5305-01-659-9957 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-659-9957. Manufacturer of record part number: 91259A851.
Also searched as  5305-01-659-9957 · 5305016599957 · NIIN 016599957 · 01-659-9957 · FSC 5305 Screws · CAGE 39428 · 91259A851
Nearby stock numbers  ·
Features
  • Screw,shoulder — FSC 5305
  • Width Across Flats: 0.375 INCHES NOMINAL IN
  • Fastener Length: 4.475 INCHES NOMINAL IN
  • Shoulder Diameter: 0.625 INCHES NOMINAL FIRST SHOULDER IN
  • Nominal Thread Diameter: 0.625 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Color: BLACK OVERALL
  • Surface Treatment: OXIDE OVERALL
Identification
  • NSN: 5305-01-659-9957
  • NIIN: 016599957
  • FSC: 5305 — Screws
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 91259A851
  • Manufacturer: Mcmaster-Carr Supply Co
General Description

The Screw,shoulder, cataloged under National Stock Number 5305-01-659-9957, 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
ParameterValue
NSN5305-01-659-9957
Primary Part Number91259A851
Item NameScrew,shoulder
FSC / FSG5305 / 53 — Screws
ManufacturerMcmaster-Carr Supply Co
StatusACTIVE
Width Across Flats0.375 INCHES NOMINAL IN
Fastener Length4.475 INCHES NOMINAL IN
Shoulder Diameter0.625 INCHES NOMINAL FIRST SHOULDER IN
Nominal Thread Diameter0.625 INCHES IN
Thread DirectionRIGHT-HAND
ColorBLACK OVERALL
Surface TreatmentOXIDE OVERALL
Thread Quantity Per Inch13
MaterialSTEEL OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Head Diameter1.0 INCHES NOMINAL IN
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
91259A851 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.
5305-00-000-0094
SCREW,CLOSE TOLERANCE
5305-00-000-0094
SCREW,CLOSE TOLERANCE
5305-00-000-0094
SCREW,CLOSE TOLERANCE
5305-00-000-1397
5305-00-000-1397 · Item name not on file
5305-00-000-2625
5305-00-000-2625 · Item name not on file
5305-00-000-3669
5305-00-000-3669 · Item name not on file
5305-00-000-3830
5305-00-000-3830 · Item name not on file
5305-00-000-3831
5305-00-000-3831 · Item name not on file

Frequently Asked Questions

What is NSN 5305-01-659-9957?

NSN 5305-01-659-9957 is a Screw,shoulder, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-659-9957?

NSN 5305-01-659-9957 has 1 manufacturer part number on file: 91259A851 (Mcmaster-Carr Supply Co).

What are the specifications of 91259A851?

Key specifications for 91259A851: Width Across Flats: 0.375 INCHES NOMINAL IN; Fastener Length: 4.475 INCHES NOMINAL IN; Shoulder Diameter: 0.625 INCHES NOMINAL FIRST SHOULDER IN; Nominal Thread Diameter: 0.625 INCHES IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-659-9957 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.
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