PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

90251A576Setscrew

Mcmaster-Carr Supply Co · NSN 5305-01-545-8352 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-545-8352 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-545-8352. Primary manufacturer part number: 90251A576.
Features
  • Setscrew — FSC 5305
  • Point Style: CUP
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Internal Drive Style: HEXAGON
  • Head Style: HEADLESS (SETSCREW)
  • Thread Direction: RIGHT-HAND
  • Thread Quantity Per Inch: 18
  • Width Across Flats: 0.156 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Setscrew, cataloged under National Stock Number 5305-01-545-8352, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-545-8352
Primary Part Number90251A576
Item NameSetscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMcmaster-Carr Supply Co
StatusACTIVE
Point StyleCUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Internal Drive StyleHEXAGON
Head StyleHEADLESS (SETSCREW)
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch18
Width Across Flats0.156 INCHES NOMINAL IN
Fastener Length0.375 INCHES NOMINAL IN
Thread Class3A A
MaterialSTEEL OVERALL
Nominal Thread Diameter0.312 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6670-00-054-5107P1200 INTERCHANGEABLE
Balance,precision,t
Pakhoed Distribution Corp
Cross-Reference Index
Part NumberManufacturer
36-1809 H.o. Bostrom Company, Inc. Dba Ho Bostrom Co Inc (USA)
90251A576 PRIMARY Mcmaster-Carr Supply Co (USA)
Related Parts
6670-00-054-5107INTERCHANGEABLE
BALANCE,PRECISION,T
P1200

Frequently Asked Questions

What is NSN 5305-01-545-8352?

NSN 5305-01-545-8352 is a Setscrew, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-545-8352?

NSN 5305-01-545-8352 has 2 cross-referenced part numbers: 36-1809 (H.o. Bostrom Company, Inc. Dba Ho Bostrom Co Inc), 90251A576 (Mcmaster-Carr Supply Co).

What NSN replaces 5305-01-545-8352?

There is 1 known substitute for 5305-01-545-8352: 6670-00-054-5107. Verify interchangeability with system specifications before substitution.

What are the specifications of 90251A576?

Key specifications for 90251A576: Point Style: CUP; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Internal Drive Style: HEXAGON; Head Style: HEADLESS (SETSCREW). 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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