PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HS4431-5Stud Assembly,turnlock Fastener

The Boeing Company · NSN 5325-00-726-6700 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-726-6700 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-726-6700. Primary manufacturer part number: HS4431-5.
Features
  • Stud Assembly,turnlock Fastener — FSC 5325
  • Drive Type: SLOTTED
  • Turnlock Stud Head Style: FLAT FILLISTER
  • Distance From Engaging Member to Largest Bearing Surface of Head: 0.662 INCHES MINIMUM AND 0.677 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OVERALL
  • Material: STEEL OVERALL
  • Eyelet Length: 0.322 INCHES NOMINAL IN
  • Stud Assembly Style: STUD ASSEMBLY
Applications
  • Applications requiring Steel Overall construction
General Description

The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-726-6700, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-726-6700
Primary Part NumberHS4431-5
Item NameStud Assembly,turnlock Fastener
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerThe Boeing Company
StatusCANCELLED
Drive TypeSLOTTED
Turnlock Stud Head StyleFLAT FILLISTER
Distance From Engaging Member to Largest Bearing Surface of Head0.662 INCHES MINIMUM AND 0.677 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL OVERALL
Eyelet Length0.322 INCHES NOMINAL IN
Stud Assembly StyleSTUD ASSEMBLY
Stud Head Height0.093 INCHES NOMINAL IN
Diameter0.303 INCHES NOMINAL IN
Securing Device TypeWASHER
Eyelet Outside Diameter0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Material Accommodated Thickness0.120 INCHES MINIMUM AND 0.179 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
2530-00-226-8403134455 INTERCHANGEABLE
Plug,check Ball
Clark Material Handling Company
3455-00-231-3477301-8 INTERCHANGEABLE
Cutter,milling,plain
Kennametal Inc. Div Kennametal Industrial Products Group
5325-00-298-7009G205521-5 INTERCHANGEABLE
Stud Assembly,turnlock Fastener
Howmet Global Fastening Systems Inc Div Camloc Products
3460-00-582-735778E INTERCHANGEABLE
Wheel,abrasive
Sioux Tools Inc
5895-01-035-638126005 INTERCHANGEABLE
Control-Power Supply
Sepco Inc
5130-01-177-5609 INTERCHANGEABLE
Brush,wire,rotary Wheel
5999-01-321-2233 INTERCHANGEABLE
Tape,shielding,electrical
6520-01-501-54791049564 INTERCHANGEABLE
Mirror,mouth Examining
Henry Schein, Inc.
5360-01-547-7420119-1535 INTERCHANGEABLE
Spring,helical,compression
Caterpillar Inc Div Caterpillar Defense
5325-01-585-1529ALS4-610-6.6 INTERCHANGEABLE
Insert,screw Thread
Avk Industries Products Inc
Cross-Reference Index
Part NumberManufacturer
HS4431-5 Ho-Ho-Kus, Inc (USA)
5325PL1816098 Jednolity Indeks Materialowy - Uniform Material Index (POL)
HS4431-5 PRIMARY The Boeing Company (USA)
HS4431-5 Mcdonnell Douglas Helicopter Co Inc (USA)
3D0063-5AC The Boeing Company (USA)
1126000-5 Monadnock Company, the Dba Lisi Aerospace (USA)
415865-1 Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
2600-5 PRIMARY Howmet Global Fastening Systems Inc Div Camloc Products (USA)
MDS2404-05 Leonardo Uk Ltd (GBR)
HS4431-5 Monadnock Company, the Dba Lisi Aerospace (USA)
100110P4 General Electric Company (USA)
Related Parts
2530-00-226-8403INTERCHANGEABLE
PLUG,CHECK BALL
134455
3455-00-231-3477INTERCHANGEABLE
CUTTER,MILLING,PLAIN
301-8
5325-00-298-7009INTERCHANGEABLE
STUD ASSEMBLY,TURNLOCK FASTENER
G205521-5
3460-00-582-7357INTERCHANGEABLE
WHEEL,ABRASIVE
78E
5895-01-035-6381INTERCHANGEABLE
CONTROL-POWER SUPPLY
26005
5130-01-177-5609INTERCHANGEABLE
BRUSH,WIRE,ROTARY WHEEL
5999-01-321-2233INTERCHANGEABLE
TAPE,SHIELDING,ELECTRICAL
6520-01-501-5479INTERCHANGEABLE
MIRROR,MOUTH EXAMINING
1049564
5360-01-547-7420INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
119-1535
5325-01-585-1529INTERCHANGEABLE
INSERT,SCREW THREAD
ALS4-610-6.6

Frequently Asked Questions

What is NSN 5325-00-726-6700?

NSN 5325-00-726-6700 is a Stud Assembly,turnlock Fastener, manufactured by The Boeing Company, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-726-6700?

NSN 5325-00-726-6700 has 11 cross-referenced part numbers: HS4431-5 (Ho-Ho-Kus, Inc), 5325PL1816098 (Jednolity Indeks Materialowy - Uniform Material Index), HS4431-5 (The Boeing Company), HS4431-5 (Mcdonnell Douglas Helicopter Co Inc), 3D0063-5AC (The Boeing Company) and 6 more.

What NSN replaces 5325-00-726-6700?

There are 10 known substitutes for 5325-00-726-6700: 2530-00-226-8403, 3455-00-231-3477, 5325-00-298-7009 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HS4431-5?

Key specifications for HS4431-5: Drive Type: SLOTTED; Turnlock Stud Head Style: FLAT FILLISTER; Distance From Engaging Member to Largest Bearing Surface of Head: 0.662 INCHES MINIMUM AND 0.677 INCHES MAXIMUM IN; Surface Treatment: CADMIUM OVERALL. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-726-6700 still in active supply?

NSN 5325-00-726-6700 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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