PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G-88-137Washer,flat

M.t. Davidson Company · NSN 5310-00-272-7310 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-272-7310 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-272-7310. Primary manufacturer part number: G-88-137.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.031 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.781 INCHES NOMINAL IN
  • Overall Diameter: 4.000 INCHES NOMINAL IN
  • Material: COPPER ALLOY OVERALL
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-272-7310, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is M.t. Davidson Company. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 1 manufacturer, 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
NSN5310-00-272-7310
Primary Part NumberG-88-137
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerM.t. Davidson Company
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.031 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.781 INCHES NOMINAL IN
Overall Diameter4.000 INCHES NOMINAL IN
MaterialCOPPER ALLOY OVERALL
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5996-00-112-45884170 INTERCHANGEABLE
Amplifier,magnetic
Spang & Company Dba Magnetics Division
5940-00-204-82254-170 INTERCHANGEABLE
Terminal Board
Cinch Connectivity Solutions Inc.
4730-00-391-4598 INTERCHANGEABLE
Sleeve,hose Connector
3020-00-480-31384170 INTERCHANGEABLE
Gear,spur
Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division
5950-00-645-6403 INTERCHANGEABLE
Transformer,audio Frequency
4530-00-736-9228 INTERCHANGEABLE
Plate,sprayer,oil Burner Atomize
5930-00-924-2002 INTERCHANGEABLE
Switch,speed
5360-01-137-11584170 INTERCHANGEABLE
Spring
Columbia Machine Inc
5999-01-333-49504170 INTERCHANGEABLE
Heat Sink-Insulator
Boyd Laconia Llc
6640-01-543-26184170 INTERCHANGEABLE
Tube,capillary,micro Pipet
Matrix Technologies L.l.c. Dba Thermo Fisher Scientific
Cross-Reference Index
Part NumberManufacturer
G89PC137 M.t. Davidson Company (USA)
G-88-137 PRIMARY M.t. Davidson Company (USA)
4170 M.t. Davidson Company (USA)
G99PC137 M.t. Davidson Company (USA)
G98PC137 M.t. Davidson Company (USA)
60 M.t. Davidson Company (USA)
G88PC137 M.t. Davidson Company (USA)
Related Parts
5996-00-112-4588INTERCHANGEABLE
AMPLIFIER,MAGNETIC
4170
5940-00-204-8225INTERCHANGEABLE
TERMINAL BOARD
4-170
4730-00-391-4598INTERCHANGEABLE
SLEEVE,HOSE CONNECTOR
3020-00-480-3138INTERCHANGEABLE
GEAR,SPUR
4170
5950-00-645-6403INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
4530-00-736-9228INTERCHANGEABLE
PLATE,SPRAYER,OIL BURNER ATOMIZE
5930-00-924-2002INTERCHANGEABLE
SWITCH,SPEED
5360-01-137-1158INTERCHANGEABLE
SPRING
4170
5999-01-333-4950INTERCHANGEABLE
HEAT SINK-INSULATOR
4170
6640-01-543-2618INTERCHANGEABLE
TUBE,CAPILLARY,MICRO PIPET
4170
2910-01-609-6250INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
4170 13010
5325-01-643-0408INTERCHANGEABLE
FASTENER TAPE,HOOK AND PILE
4170

Frequently Asked Questions

What is NSN 5310-00-272-7310?

NSN 5310-00-272-7310 is a Washer,flat, manufactured by M.t. Davidson Company, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-272-7310?

NSN 5310-00-272-7310 has 7 cross-referenced part numbers: G89PC137 (M.t. Davidson Company), G-88-137 (M.t. Davidson Company), 4170 (M.t. Davidson Company), G99PC137 (M.t. Davidson Company), G98PC137 (M.t. Davidson Company) and 2 more.

What NSN replaces 5310-00-272-7310?

There are 12 known substitutes for 5310-00-272-7310: 5996-00-112-4588, 5940-00-204-8225, 4730-00-391-4598 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G-88-137?

Key specifications for G-88-137: Cross-Sectional Shape Style: RECTANGULAR; Thickness: 0.031 INCHES NOMINAL IN; Center Hole Shape Style: ROUND; Hole Diameter: 0.781 INCHES NOMINAL IN. 7 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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