PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A3725Washer,convex

Whitney Chain Operation Power Transmission Div Dresser Industries Inc · NSN 5310-00-350-6759 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-350-6759 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-350-6759. Primary manufacturer part number: A3725.
Features
  • Washer,convex — FSC 5310
  • Material: STEEL COMP 1117 OVERALL
  • Style Designator: CONVEX
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Material Thickness: 0.188 INCHES NOMINAL IN
  • Hole Diameter: 0.266 INCHES NOMINAL IN
  • Outside Diameter: 1.250 INCHES NOMINAL IN
  • 5 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1117 Overall construction
General Description

The Washer,convex, cataloged under National Stock Number 5310-00-350-6759, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Whitney Chain Operation Power Transmission Div Dresser Industries Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 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
NSN5310-00-350-6759
Primary Part NumberA3725
Item NameWasher,convex
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWhitney Chain Operation Power Transmission Div Dresser Industries Inc
StatusACTIVE
MaterialSTEEL COMP 1117 OVERALL
Style DesignatorCONVEX
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Material Thickness0.188 INCHES NOMINAL IN
Hole Diameter0.266 INCHES NOMINAL IN
Outside Diameter1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5962-00-658-3296462672-1 INTERCHANGEABLE
Microcircuit,linear
Raytheon Company Dba Raytheon Co
5120-01-152-5328A37-25 INTERCHANGEABLE
Collet,clutch Aligning Tool
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5360-01-204-0089 INTERCHANGEABLE
Spring,helical,compression
Cross-Reference Index
Part NumberManufacturer
A3725 Whitney Chain Operation Power Transmission Div Dresser Industries Inc (USA)
319970 Hercules Engine Co Inc (USA)
A17685 Whitney Chain Operation Power Transmission Div Dresser Industries Inc (USA)
8720070 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
6319970 Hercules Engine Co Inc (USA)
Related Parts
5962-00-658-3296INTERCHANGEABLE
MICROCIRCUIT,LINEAR
462672-1
5120-01-152-5328INTERCHANGEABLE
COLLET,CLUTCH ALIGNING TOOL
A37-25
5360-01-204-0089INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION

Frequently Asked Questions

What is NSN 5310-00-350-6759?

NSN 5310-00-350-6759 is a Washer,convex, manufactured by Whitney Chain Operation Power Transmission Div Dresser Industries Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-350-6759?

NSN 5310-00-350-6759 has 5 cross-referenced part numbers: A3725 (Whitney Chain Operation Power Transmission Div Dresser Industries Inc), 319970 (Hercules Engine Co Inc), A17685 (Whitney Chain Operation Power Transmission Div Dresser Industries Inc), 8720070 (U S Army Tank Automotive Command Amsta-Im-Mm), 6319970 (Hercules Engine Co Inc).

What NSN replaces 5310-00-350-6759?

There are 3 known substitutes for 5310-00-350-6759: 5962-00-658-3296, 5120-01-152-5328, 5360-01-204-0089. Verify interchangeability with system specifications before substitution.

What are the specifications of A3725?

Key specifications for A3725: Material: STEEL COMP 1117 OVERALL; Style Designator: CONVEX; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Material Thickness: 0.188 INCHES NOMINAL IN. 6 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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