PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-74Washer,flat

Dresser Industries Inc Leroi Div · NSN 5310-00-187-1860 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-187-1860 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-187-1860. Primary manufacturer part number: 20-74.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Material: STEEL OVERALL
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.500 INCHES NOMINAL IN
  • Hole Diameter: 1.031 INCHES NOMINAL IN
  • Thickness: 0.062 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-187-1860, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-187-1860
Primary Part Number20-74
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusCANCELLED
Peripheral Shape StyleROUND
MaterialSTEEL OVERALL
Center Hole Shape StyleROUND
Overall Diameter1.500 INCHES NOMINAL IN
Hole Diameter1.031 INCHES NOMINAL IN
Thickness0.062 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5970-00-045-36992074-28 INTERCHANGEABLE
Tape,insulation,electrical
Plymouth Rubber Co Inc
5330-00-131-7058 INTERCHANGEABLE
Seal,plain Encased
4310-00-166-5352207-4 INTERCHANGEABLE
Housing,vacuum Pump
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5977-00-325-6507B2074 INTERCHANGEABLE
Brush,electrical Contact
Kollmorgen Corp
5330-00-388-68332074 INTERCHANGEABLE
Packing Assembly
Northrop Grumman Systems Corporation Div Marine Systems
2540-00-401-83372074 INTERCHANGEABLE
Mirror Assembly,rearview
Chantilly Development Corporation Dba Acme Specialty Mfg Co Div Acme Specialty Mfg.
6105-00-542-79486309-01 INTERCHANGEABLE
Motor,alternating Current
Rotron Incorporated
5935-01-116-7441GP825ED1 INTERCHANGEABLE
Plug,tip
Northrop Grumman Systems Corporation
5930-01-129-40125580-2 INTERCHANGEABLE
Switch,thermostatic
Duke Mfg Co
2920-01-140-615280601 INTERCHANGEABLE
Switch,lock,ignition
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
Cross-Reference Index
Part NumberManufacturer
20-74 PRIMARY Dresser Industries Inc Leroi Div (USA)
Related Parts
5970-00-045-3699INTERCHANGEABLE
TAPE,INSULATION,ELECTRICAL
2074-28
5330-00-131-7058INTERCHANGEABLE
SEAL,PLAIN ENCASED
4310-00-166-5352INTERCHANGEABLE
HOUSING,VACUUM PUMP
207-4
5977-00-325-6507INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
B2074
5330-00-388-6833INTERCHANGEABLE
PACKING ASSEMBLY
2074
2540-00-401-8337INTERCHANGEABLE
MIRROR ASSEMBLY,REARVIEW
2074
6105-00-542-7948INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
6309-01
5935-01-116-7441INTERCHANGEABLE
PLUG,TIP
GP825ED1
5930-01-129-4012INTERCHANGEABLE
SWITCH,THERMOSTATIC
5580-2
2920-01-140-6152INTERCHANGEABLE
SWITCH,LOCK,IGNITION
80601
6640-01-354-3432INTERCHANGEABLE
HEATER,BLOK,TEST TU
2074
5325-01-418-5911INTERCHANGEABLE
GROMMET,NONMETALLIC
2074

Frequently Asked Questions

What is NSN 5310-00-187-1860?

NSN 5310-00-187-1860 is a Washer,flat, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-187-1860?

NSN 5310-00-187-1860 has 1 cross-referenced part number: 20-74 (Dresser Industries Inc Leroi Div).

What NSN replaces 5310-00-187-1860?

There are 12 known substitutes for 5310-00-187-1860: 5970-00-045-3699, 5330-00-131-7058, 4310-00-166-5352 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-74?

Key specifications for 20-74: Peripheral Shape Style: ROUND; Material: STEEL OVERALL; Center Hole Shape Style: ROUND; Overall Diameter: 1.500 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-187-1860 still in active supply?

NSN 5310-00-187-1860 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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