PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121574Nut,plain,round

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 5310-00-281-2504 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-281-2504 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-281-2504. Primary manufacturer part number: 121574.
Features
  • Nut,plain,round — FSC 5310
  • Drive Point Width: 0.184 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
  • Nut Thickness: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Nut Diameter: 1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
  • Thread Series: UNF
  • Nominal Thread Size: 0.625 INCHES IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8740 Overall construction
General Description

The Nut,plain,round, cataloged under National Stock Number 5310-00-281-2504, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-281-2504
Primary Part Number121574
Item NameNut,plain,round
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusCANCELLED
Drive Point Width0.184 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
Nut Thickness0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Nut Diameter1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Hardness Rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
Thread SeriesUNF
Nominal Thread Size0.625 INCHES IN
Thread Quantity Per Inch18
MaterialSTEEL COMP 8740 OVERALL
Drive Point Quantity6
Nut StyleROUND
Countersink Angle58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM NUT
Thread Class3B
Material Document and ClassificationAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6323 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Drive Point Depth0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5310-00-012-1574 INTERCHANGEABLE
Washer,lock
5310-00-021-85631018 INTERCHANGEABLE
Nut,plain,hexagon
Ambac International Corporation Div Ambac International
5310-00-820-6653MS35338-50 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-331-5730 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
121574 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
5310-00-012-1574INTERCHANGEABLE
WASHER,LOCK
5310-00-021-8563INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1018
5310-00-820-6653INTERCHANGEABLE
WASHER,LOCK
MS35338-50
5310-01-331-5730INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-00-281-2504?

NSN 5310-00-281-2504 is a Nut,plain,round, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-281-2504?

NSN 5310-00-281-2504 has 1 cross-referenced part number: 121574 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5310-00-281-2504?

There are 4 known substitutes for 5310-00-281-2504: 5310-00-012-1574, 5310-00-021-8563, 5310-00-820-6653 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121574?

Key specifications for 121574: Drive Point Width: 0.184 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Nut Thickness: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Nut Diameter: 1.240 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-281-2504 still in active supply?

NSN 5310-00-281-2504 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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