PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NASM51966Setscrew

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-724-7276 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-724-7276 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-724-7276. Primary manufacturer part number: NASM51966.
Features
  • Setscrew — FSC 5305
  • Thread Quantity Per Inch: 40
  • Material: STEEL COMP 4032 OR STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL
  • Thread Series Designator: UNF
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
  • Thread Direction: RIGHT-HAND
  • Head Style: HEADLESS (SETSCREW)
  • Thread Length: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
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 5305-00-724-7276, 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 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-724-7276
Primary Part NumberNASM51966
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
StatusACTIVE
Thread Quantity Per Inch40
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 Series DesignatorUNF
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
Thread DirectionRIGHT-HAND
Head StyleHEADLESS (SETSCREW)
Thread Length0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
Material Document and ClassificationAISI ASSN STD ALL MATERIAL RESPONSES OVERALL
Width Across Flats0.062 INCHES NOMINAL IN
Point StyleFLAT
Fastener Length0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
Internal Drive StyleHEXAGON
Surface Treatment Document and ClassificationQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Thread Class3A A
Nominal Thread Diameter0.138 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
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
5305-00-702-4532NASM51981-74 INTERCHANGEABLE
Setscrew
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5305-00-728-6322MS51966-65 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
Cross-Reference Index
Part NumberManufacturer
NASM51966 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS51966-25 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
5305-00-702-4532INTERCHANGEABLE
SETSCREW
NASM51981-74
5305-00-728-6322INTERCHANGEABLE
SETSCREW
MS51966-65
5305-00-823-5719INTERCHANGEABLE
SETSCREW
5305-01-015-6631INTERCHANGEABLE
SETSCREW
5305-01-057-0866INTERCHANGEABLE
SETSCREW
NAS1081-3A8P

Frequently Asked Questions

What is NSN 5305-00-724-7276?

NSN 5305-00-724-7276 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: active.

What are the part numbers for NSN 5305-00-724-7276?

NSN 5305-00-724-7276 has 3 cross-referenced part numbers: NASM51966 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS51966-25 (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 5305-00-724-7276?

There are 11 known substitutes for 5305-00-724-7276: 5305-00-022-3088, 5305-00-043-2393, 5305-00-297-2935 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NASM51966?

Key specifications for NASM51966: Thread Quantity Per Inch: 40; Material: STEEL COMP 4032 OR STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL; Thread Series Designator: UNF; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL. 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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