PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51963-71Setscrew

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-00-723-9379 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-723-9379 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-723-9379. Primary manufacturer part number: MS51963-71.
Features
  • Setscrew — FSC 5305
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Point Style: CUP
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Fastener Length: 1.000 INCHES NOMINAL IN
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 5305-00-723-9379, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5305-00-723-9379
Primary Part NumberMS51963-71
Item NameSetscrew
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Surface Treatment Document and ClassificationQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Point StyleCUP
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Fastener Length1.000 INCHES NOMINAL IN
Thread Class3A A
Thread DirectionRIGHT-HAND
Head StyleHEADLESS (SETSCREW)
Thread Quantity Per Inch20
Thread Length1.000 INCHES MAXIMUM IN
Internal Drive StyleHEXAGON
Width Across Flats0.125 INCHES NOMINAL IN
MaterialSTEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL
Nominal Thread Diameter0.250 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-249-0198 INTERCHANGEABLE
Setscrew
5305-00-249-020929231S INTERCHANGEABLE
Setscrew
Aeroil Products Co Inc
5305-00-249-0210 INTERCHANGEABLE
Setscrew
5305-00-249-0220 INTERCHANGEABLE
Setscrew
5305-00-249-0273 INTERCHANGEABLE
Setscrew
5305-00-249-0278 INTERCHANGEABLE
Setscrew
5305-00-249-0534 INTERCHANGEABLE
Setscrew
5305-00-253-3618 INTERCHANGEABLE
Setscrew
5305-00-253-3631 INTERCHANGEABLE
Setscrew
5305-00-253-3638 INTERCHANGEABLE
Setscrew
Cross-Reference Index
Part NumberManufacturer
MS51963-71 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5305007239379 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
MILB933TYPEG Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-249-0198INTERCHANGEABLE
SETSCREW
5305-00-249-0209INTERCHANGEABLE
SETSCREW
29231S
5305-00-249-0210INTERCHANGEABLE
SETSCREW
5305-00-249-0220INTERCHANGEABLE
SETSCREW
5305-00-249-0273INTERCHANGEABLE
SETSCREW
5305-00-249-0278INTERCHANGEABLE
SETSCREW
5305-00-249-0534INTERCHANGEABLE
SETSCREW
5305-00-253-3618INTERCHANGEABLE
SETSCREW
5305-00-253-3631INTERCHANGEABLE
SETSCREW
5305-00-253-3638INTERCHANGEABLE
SETSCREW
5305-00-253-3674INTERCHANGEABLE
SETSCREW
5305-00-253-3810INTERCHANGEABLE
SETSCREW
34F4C30APC8

Frequently Asked Questions

What is NSN 5305-00-723-9379?

NSN 5305-00-723-9379 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: cancelled.

What are the part numbers for NSN 5305-00-723-9379?

NSN 5305-00-723-9379 has 3 cross-referenced part numbers: MS51963-71 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 5305007239379 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), MILB933TYPEG (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5305-00-723-9379?

There are 12 known substitutes for 5305-00-723-9379: 5305-00-249-0198, 5305-00-249-0209, 5305-00-249-0210 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51963-71?

Key specifications for MS51963-71: Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Point Style: CUP. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-723-9379 still in active supply?

NSN 5305-00-723-9379 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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