PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS17731-2Fastener Assembly,turnlock

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5325-00-406-5478 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-406-5478 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-406-5478. Primary manufacturer part number: MS17731-2.
Features
  • Fastener Assembly,turnlock — FSC 5325
  • Stud Shank Major Diameter: 0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
  • Receptacle Height: 0.625 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Drive Type: CROSS RECESS
  • Receptacle Overall Length: 1.135 INCHES MAXIMUM IN
  • Grip Length: 0.730 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Applications requiring Steel Comp 1008 or Steel Comp 1010 or Steel Comp 1012 or Steel Comp 1015 or Steel Comp 1016 or Steel Comp 1017 or Steel Comp 1018 or Steel Comp 1019 or Steel Comp 1020 or Steel Comp 1021 or Steel Comp 1022 or Steel Comp 1025 or Steel Comp 1030 or Steel Comp 1035 or Steel Comp 1040 or Steel Comp 1045 or Steel Comp 1050 or Steel Comp 1055 or Steel Comp 1060 or Steel Comp 1095 Overall construction
General Description

The Fastener Assembly,turnlock, cataloged under National Stock Number 5325-00-406-5478, is classified within Federal Supply Class 5325 (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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-406-5478
Primary Part NumberMS17731-2
Item NameFastener Assembly,turnlock
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
Stud Shank Major Diameter0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Receptacle Height0.625 INCHES MAXIMUM IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Drive TypeCROSS RECESS
Receptacle Overall Length1.135 INCHES MAXIMUM IN
Grip Length0.730 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Turnlock Receptacle StyleRECEPTACLE
Nondefinitive Spec/std Data1 TYPE
MaterialSTEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OR STEEL COMP 1040 OR STEEL COMP 1045 OR STEEL COMP 1050 OR STEEL COMP 1055 OR STEEL COMP 1060 OR STEEL COMP 1095 OVERALL
Material Accommodated Thickness0.221 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
Receptacle Width0.625 INCHES MAXIMUM IN
Turnlock Stud Shank StyleSTUD SHANK
Turnlock Stud Head StyleFLAT COUNTERSUNK
Center to Center Distance Between Mounting Holes0.873 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
Turnlock Mounting Hole Diameter0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
Mounting StylePLAIN W/MOUNTING HOLE
Diameter0.525 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5325-00-133-2094 INTERCHANGEABLE
Fastener Assembly,turnlock
5325-00-197-3359MS17732-3 INTERCHANGEABLE
Fastener Assembly,turnlock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-00-278-0734MS17732-1 INTERCHANGEABLE
Fastener Assembly,turnlock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-00-284-2146MS17732-5 INTERCHANGEABLE
Fastener Assembly,turnlock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5315-00-422-48880516-0106 INTERCHANGEABLE
Pin,straight,headless
Cummins Power Generation Inc.
5325-00-478-3317FX10-1555-4P INTERCHANGEABLE
Fastener Assembly,turnlock
Howmet Global Fastening Systems Inc. Div Tridair Products
5325-00-478-3318MS17731-3 INTERCHANGEABLE
Fastener Assembly,turnlock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-00-832-5772 INTERCHANGEABLE
Fastener Assembly,turnlock
5325-00-832-5773 INTERCHANGEABLE
Fastener Assembly,turnlock
5905-00-875-6967803002 INTERCHANGEABLE
Resistor,fixed,film
North Atlantic Industries, Inc. Dba North Atlantic Industries
Cross-Reference Index
Part NumberManufacturer
8-03-00-2 Precision Form Rivet Inc (USA)
NASM22978 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS17731-2 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
8-03-00-2 Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company (USA)
MIL-F-22978 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS17731-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
8-03-00-2 Deutsch Co the (USA)
Related Parts
5325-00-133-2094INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
5325-00-197-3359INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
MS17732-3
5325-00-278-0734INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
MS17732-1
5325-00-284-2146INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
MS17732-5
5315-00-422-4888INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
0516-0106
5325-00-478-3317INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
FX10-1555-4P
5325-00-478-3318INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
MS17731-3
5325-00-832-5772INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
5325-00-832-5773INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
5905-00-875-6967INTERCHANGEABLE
RESISTOR,FIXED,FILM
803002
5325-01-007-8529INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
5325-01-032-3664INTERCHANGEABLE
FASTENER ASSEMBLY,TURNLOCK
NASM17731

Frequently Asked Questions

What is NSN 5325-00-406-5478?

NSN 5325-00-406-5478 is a Fastener Assembly,turnlock, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-406-5478?

NSN 5325-00-406-5478 has 7 cross-referenced part numbers: 8-03-00-2 (Precision Form Rivet Inc), NASM22978 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS17731-2 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 8-03-00-2 (Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company), MIL-F-22978 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 5325-00-406-5478?

There are 12 known substitutes for 5325-00-406-5478: 5325-00-133-2094, 5325-00-197-3359, 5325-00-278-0734 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS17731-2?

Key specifications for MS17731-2: Stud Shank Major Diameter: 0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Receptacle Height: 0.625 INCHES MAXIMUM IN; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Drive Type: CROSS RECESS. 19 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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