PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

91251A110Screw,cap,socket Head

Mcmaster-Carr Supply Co · NSN 5305-01-625-1635 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-625-1635 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-625-1635. Primary manufacturer part number: 91251A110.
Features
  • Screw,cap,socket Head — FSC 5305
  • Surface Treatment: OXIDE OVERALL
  • Thread Quantity Per Inch: 40
  • Width Across Flats: 0.094 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Fastener Length: 0.50 INCHES NOMINAL IN
  • Internal Drive Style: HEXAGON
  • Head Height: 0.112 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-625-1635, 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 15 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-625-1635
Primary Part Number91251A110
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMcmaster-Carr Supply Co
StatusACTIVE
Surface TreatmentOXIDE OVERALL
Thread Quantity Per Inch40
Width Across Flats0.094 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Fastener Length0.50 INCHES NOMINAL IN
Internal Drive StyleHEXAGON
Head Height0.112 INCHES NOMINAL IN
Head StyleFLAT CHAMFER
Thread Class3A A
Nominal Thread Diameter0.112 INCHES IN
Head Diameter0.183 INCHES NOMINAL IN
Thread Length0.50 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
MaterialALUMINUM ALLOY OVERALL
ColorBLACK OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5935-00-201-330880044 INTERCHANGEABLE
Connector,receptacle,electrical
Lockheed Martin Corporation Div Rms
8030-00-503-0316 INTERCHANGEABLE
Sealing Compound
6685-00-833-5681306G INTERCHANGEABLE
Indicator,pressure
Stewart-Warner Corporation
5120-00-928-41067163A33 INTERCHANGEABLE
Blade,socket Head Screw Key
Mcmaster-Carr Supply Co
5998-01-054-836380044 INTERCHANGEABLE
Circuit Card Assembly
Ohio Semitronics Inc
4820-01-058-51489123PC5A INTERCHANGEABLE
Stem,fluid Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
7510-01-338-331780044 INTERCHANGEABLE
Tape,correction
Liquid Paper Corp Div of the Gillette Co
Cross-Reference Index
Part NumberManufacturer
80044 Fastenal Company Dba Fastenal Co (USA)
91251A110 PRIMARY Mcmaster-Carr Supply Co (USA)
Related Parts
5935-00-201-3308INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
80044
8030-00-503-0316INTERCHANGEABLE
SEALING COMPOUND
6685-00-833-5681INTERCHANGEABLE
INDICATOR,PRESSURE
306G
5120-00-928-4106INTERCHANGEABLE
BLADE,SOCKET HEAD SCREW KEY
7163A33
5998-01-054-8363INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
80044
4820-01-058-5148INTERCHANGEABLE
STEM,FLUID VALVE
9123PC5A
7510-01-338-3317INTERCHANGEABLE
TAPE,CORRECTION
80044

Frequently Asked Questions

What is NSN 5305-01-625-1635?

NSN 5305-01-625-1635 is a Screw,cap,socket Head, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-625-1635?

NSN 5305-01-625-1635 has 2 cross-referenced part numbers: 80044 (Fastenal Company Dba Fastenal Co), 91251A110 (Mcmaster-Carr Supply Co).

What NSN replaces 5305-01-625-1635?

There are 7 known substitutes for 5305-01-625-1635: 5935-00-201-3308, 8030-00-503-0316, 6685-00-833-5681 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 91251A110?

Key specifications for 91251A110: Surface Treatment: OXIDE OVERALL; Thread Quantity Per Inch: 40; Width Across Flats: 0.094 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 16 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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