PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51966-48Setscrew

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5305-00-728-6308 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-728-6308 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-728-6308. Primary manufacturer part number: MS51966-48.
Features
  • Setscrew — FSC 5305
  • Thread Class: 3A A
  • Thread Direction: RIGHT-HAND
  • Internal Drive Style: HEXAGON
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Thread Series Designator: UNF
Applications
  • Applications requiring 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 5305-00-728-6308, 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 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-728-6308
Primary Part NumberMS51966-48
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
Thread Class3A A
Thread DirectionRIGHT-HAND
Internal Drive StyleHEXAGON
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Thread Series DesignatorUNF
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL
Nominal Thread Diameter0.190 INCHES IN
Fastener Length0.188 INCHES NOMINAL IN
Width Across Flats0.094 INCHES NOMINAL IN
Head StyleHEADLESS (SETSCREW)
Thread Quantity Per Inch32
Point StyleFLAT
Thread Length0.188 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-047-3896 INTERCHANGEABLE
Setscrew
3110-00-076-238866187-66462 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
4820-00-116-28331023-L INTERCHANGEABLE
Disk,valve
Tescom Corp Dba Tescom Div Tescom
3120-00-288-0036424099PC95 INTERCHANGEABLE
Bearing,sleeve
Naval Ship Systems Command
3120-00-432-784110234-1 INTERCHANGEABLE
Bushing,sleeve
The Dewey Electronics Corporation
5940-00-644-79481564 INTERCHANGEABLE
Terminal,lug
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
4030-00-880-258010234 INTERCHANGEABLE
Swivel Assembly,jaw
Astrocom Electronics Inc
5999-00-900-067810234 INTERCHANGEABLE
Contact,electrical
Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace
7045-01-006-0822 INTERCHANGEABLE
Tape Eraser,bulk
5310-01-016-9345B1575-5/16 INTERCHANGEABLE
Nut,plain,hexagon
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
Cross-Reference Index
Part NumberManufacturer
901E324P9 Fluor Marine Propulsion, Llc Dba Knolls Atomic Power Laboratory (USA)
5305007286308 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
FFS200 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS51966-48 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AN565A1032H3 Aeronautical Standards Group Dept of Navy and Air Force (USA)
MS51966-48 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
3152-2 Marvel Manufacturing Co Div the Marvel Manufacturing Company (USA)
10234 Zf Industrieantriebe Witten Gmbh (DEU)
0.190-32UNRFX.188LG.FLATPOINT Sps Technologies Inc Unbrako Div (USA)
Related Parts
5305-00-047-3896INTERCHANGEABLE
SETSCREW
3110-00-076-2388INTERCHANGEABLE
BEARING,ROLLER,TAPERED
66187-66462
4820-00-116-2833INTERCHANGEABLE
DISK,VALVE
1023-L
3120-00-288-0036INTERCHANGEABLE
BEARING,SLEEVE
424099PC95
3120-00-432-7841INTERCHANGEABLE
BUSHING,SLEEVE
10234-1
5940-00-644-7948INTERCHANGEABLE
TERMINAL,LUG
1564
4030-00-880-2580INTERCHANGEABLE
SWIVEL ASSEMBLY,JAW
10234
5999-00-900-0678INTERCHANGEABLE
CONTACT,ELECTRICAL
10234
7045-01-006-0822INTERCHANGEABLE
TAPE ERASER,BULK
5310-01-016-9345INTERCHANGEABLE
NUT,PLAIN,HEXAGON
B1575-5/16
5985-01-043-4987INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
10179236
3020-01-052-9735INTERCHANGEABLE
GEAR,SPUR
NA140

Frequently Asked Questions

What is NSN 5305-00-728-6308?

NSN 5305-00-728-6308 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 5305-00-728-6308?

NSN 5305-00-728-6308 has 9 cross-referenced part numbers: 901E324P9 (Fluor Marine Propulsion, Llc Dba Knolls Atomic Power Laboratory), 5305007286308 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), FFS200 (Federal Specifications Promulgated by General Services Administration Washington DC), MS51966-48 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AN565A1032H3 (Aeronautical Standards Group Dept of Navy and Air Force) and 4 more.

What NSN replaces 5305-00-728-6308?

There are 12 known substitutes for 5305-00-728-6308: 5305-00-047-3896, 3110-00-076-2388, 4820-00-116-2833 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51966-48?

Key specifications for MS51966-48: Thread Class: 3A A; Thread Direction: RIGHT-HAND; Internal Drive Style: HEXAGON; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-728-6308 still in active supply?

NSN 5305-00-728-6308 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.
PartsTable Design LLC · partstable.com