PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21342-202Setscrew

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-00-395-4184 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-395-4184 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-395-4184. Primary manufacturer part number: MS21342-202.
Features
  • Setscrew — FSC 5305
  • Point Style: FLAT
  • Spline Width: 0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
  • Internal Drive Style: SIX SPLINE
  • 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)
  • Spline Major Diameter: 0.049 INCHES MINIMUM AND 0.050 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 5305-00-395-4184, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-395-4184
Primary Part NumberMS21342-202
Item NameSetscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Point StyleFLAT
Spline Width0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
Internal Drive StyleSIX SPLINE
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Spline Major Diameter0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
Thread Length0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
Nondefinitive Spec/std Data2 TYPE AND 1 STYLE
Nominal Thread Diameter0.086 INCHES IN
Thread Quantity Per Inch56
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Spline Minor Diameter0.040 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
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 DirectionRIGHT-HAND
Thread Class3A A
Fastener Length0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
Head StyleHEADLESS (SETSCREW)
Lifecycle & Compliance
Acquisition StatusACTIVE
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
5305-00-436-7127 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
5305-00-724-7276NASM51966 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
MS21342-202 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
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
5305-00-436-7127INTERCHANGEABLE
SETSCREW
5305-00-702-4532INTERCHANGEABLE
SETSCREW
NASM51981-74
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 5305-00-395-4184?

NSN 5305-00-395-4184 is a Setscrew, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-395-4184?

NSN 5305-00-395-4184 has 2 cross-referenced part numbers: MS21342-202 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), FF-S-200B (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-395-4184?

There are 10 known substitutes for 5305-00-395-4184: 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 MS21342-202?

Key specifications for MS21342-202: Point Style: FLAT; Spline Width: 0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN; Internal Drive Style: SIX SPLINE; Surface Treatment: CADMIUM AND CHROMATE OVERALL. 18 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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