PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4010085Nut,self-Locking,extended Washer

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5310-00-395-7841 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-395-7841 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-395-7841. Primary manufacturer part number: 4010085.
Features
  • Nut,self-Locking,extended Washer — FSC 5310
  • Thread Direction: RIGHT-HAND
  • Countersink Angle: 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
  • Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
  • Nominal Thread Size: 0.375 INCHES IN
  • Thread Quantity Per Inch: 24
  • Material: IRON ALLOY 660 OVERALL
  • Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Iron Alloy 660 Overall construction
General Description

The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-395-7841, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-395-7841
Primary Part Number4010085
Item NameNut,self-Locking,extended Washer
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Thread DirectionRIGHT-HAND
Countersink Angle85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
Thread SeriesUNIFIED NATIONAL JOINT FINE (UNJF)
Nominal Thread Size0.375 INCHES IN
Thread Quantity Per Inch24
MaterialIRON ALLOY 660 OVERALL
Material Document and ClassificationAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Width Across Flats0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Washer Thickness0.070 INCHES NOMINAL IN
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut StyleHEXAGON
Thread Class3B
Washer Outside Diameter0.579 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5325-00-472-9662 INTERCHANGEABLE
Eyelet,metallic
5310-01-281-6715ST2495-12 INTERCHANGEABLE
Nut,self-Locking,slotted,hexagon
Howmet Global Fastening Systems Inc
3030-01-603-039540100-85 INTERCHANGEABLE
Belt,positive Drive
Harley Davidson Motor Co Inc
Cross-Reference Index
Part NumberManufacturer
4010085 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
4020520 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
E10787-6 Harvard Industries Inc (USA)
4010085 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
73616M-624 Sps Technologies, Llc Dba PB Fasteners (USA)
4019028 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
4019028 Sps Technologies, Llc Dba PB Fasteners (USA)
Related Parts
5325-00-472-9662INTERCHANGEABLE
EYELET,METALLIC
5310-01-281-6715INTERCHANGEABLE
NUT,SELF-LOCKING,SLOTTED,HEXAGON
ST2495-12
3030-01-603-0395INTERCHANGEABLE
BELT,POSITIVE DRIVE
40100-85

Frequently Asked Questions

What is NSN 5310-00-395-7841?

NSN 5310-00-395-7841 is a Nut,self-Locking,extended Washer, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-395-7841?

NSN 5310-00-395-7841 has 7 cross-referenced part numbers: 4010085 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4020520 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), E10787-6 (Harvard Industries Inc), 4010085 (Turbo Power & Marine System Inc Sub of United Technologies Corp), 73616M-624 (Sps Technologies, Llc Dba PB Fasteners) and 2 more.

What NSN replaces 5310-00-395-7841?

There are 3 known substitutes for 5310-00-395-7841: 5325-00-472-9662, 5310-01-281-6715, 3030-01-603-0395. Verify interchangeability with system specifications before substitution.

What are the specifications of 4010085?

Key specifications for 4010085: Special Features: UPPER HEXAGON CASTELLATED 6 PLACES CENTER TO CENTER ALONG FLATS,0.125 IN. MIN 0.155 IN. MAX THROUGH W,0.187 IN. DEPTH IN; Thread Direction: RIGHT-HAND; Overall Height: 0.391 INCHES MINIMUM AND 0.421 INCHES MAXIMUM IN; Countersink Angle: 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT. 15 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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