PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NASM51981-74Setscrew

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-702-4532 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-702-4532 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-702-4532. Primary manufacturer part number: NASM51981-74.
Features
  • Setscrew — FSC 5305
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Material Document and Classification: AISI ASSN STD ALL MATERIAL RESPONSES OVERALL
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
  • Thread Direction: RIGHT-HAND
  • Head Style: HEADLESS (SETSCREW)
Applications
  • Applications requiring Steel Comp 4032 or Steel Comp 4037 or Steel Comp 4137 or Steel Comp 4140 or Steel Comp 8630 or Steel Comp 8740 Overall construction
General Description

The Setscrew, cataloged under National Stock Number 5305-00-702-4532, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-702-4532
Primary Part NumberNASM51981-74
Item NameSetscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Material Document and ClassificationAISI ASSN STD ALL MATERIAL RESPONSES OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Thread DirectionRIGHT-HAND
Head StyleHEADLESS (SETSCREW)
Fastener Length0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
Nominal Thread Diameter0.375 INCHES IN
Thread Quantity Per Inch16
Thread Class3A A
MaterialSTEEL COMP 4032 OR STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL
Thread Length0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
Width Across Flats0.187 INCHES NOMINAL IN
Internal Drive StyleHEXAGON
Point StyleOVAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5305-00-022-3088FF-S-200B INTERCHANGEABLE
Setscrew
Defense Logistics Agency Dba Defense Supply Center Philadelphia
5305-00-043-2393 INTERCHANGEABLE
Setscrew
5305-00-297-2935 INTERCHANGEABLE
Setscrew
5305-00-375-7417R126PCSP37 INTERCHANGEABLE
Setscrew
Circor Naval Solutions Llc Dba Warren Pumps
5305-00-395-4184 INTERCHANGEABLE
Setscrew
5305-00-436-7127 INTERCHANGEABLE
Setscrew
5305-00-724-7276NASM51966 INTERCHANGEABLE
Setscrew
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-823-5719 INTERCHANGEABLE
Setscrew
5305-01-015-6631 INTERCHANGEABLE
Setscrew
5305-01-057-0866NAS1081-3A8P INTERCHANGEABLE
Setscrew
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
FFS200 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS51981-74 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NASM51981 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NASM51981-74 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
FF-S-200B Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5305-00-022-3088INTERCHANGEABLE
SETSCREW
FF-S-200B
5305-00-043-2393INTERCHANGEABLE
SETSCREW
5305-00-297-2935INTERCHANGEABLE
SETSCREW
5305-00-375-7417INTERCHANGEABLE
SETSCREW
R126PCSP37
5305-00-395-4184INTERCHANGEABLE
SETSCREW
5305-00-436-7127INTERCHANGEABLE
SETSCREW
5305-00-724-7276INTERCHANGEABLE
SETSCREW
NASM51966
5305-00-823-5719INTERCHANGEABLE
SETSCREW
5305-01-015-6631INTERCHANGEABLE
SETSCREW
5305-01-057-0866INTERCHANGEABLE
SETSCREW
NAS1081-3A8P

Frequently Asked Questions

What is NSN 5305-00-702-4532?

NSN 5305-00-702-4532 is a Setscrew, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-702-4532?

NSN 5305-00-702-4532 has 5 cross-referenced part numbers: FFS200 (Federal Specifications Promulgated by General Services Administration Washington DC), MS51981-74 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NASM51981 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NASM51981-74 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), FF-S-200B (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-702-4532?

There are 10 known substitutes for 5305-00-702-4532: 5305-00-022-3088, 5305-00-043-2393, 5305-00-297-2935 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NASM51981-74?

Key specifications for NASM51981-74: Surface Treatment: CADMIUM AND CHROMATE OVERALL; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: AISI ASSN STD ALL MATERIAL RESPONSES OVERALL. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-702-4532 still in active supply?

NSN 5305-00-702-4532 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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