PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26212Washer,flat

Drs Environmental Systems Inc · NSN 5310-00-858-9597 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-858-9597 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-858-9597. Primary manufacturer part number: 26212.
Features
  • Washer,flat — FSC 5310
  • Material: WOOL OR COTTON OR CELLULOSE OR GLASS OVERALL
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 0.500 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 0.250 INCHES NOMINAL IN
  • Thickness: 0.0312 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Wool or Cotton or Cellulose or Glass Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-858-9597, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Drs Environmental Systems Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-858-9597
Primary Part Number26212
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDrs Environmental Systems Inc
StatusACTIVE
MaterialWOOL OR COTTON OR CELLULOSE OR GLASS OVERALL
Center Hole Shape StyleROUND
Overall Diameter0.500 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.250 INCHES NOMINAL IN
Thickness0.0312 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3455-00-232-903758-10127 INTERCHANGEABLE
Cutter,milling,side
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5330-00-531-5907S749A205 INTERCHANGEABLE
Gasket
Sealcraft Corporation
5331-01-271-242526-212 INTERCHANGEABLE
O-Ring
Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc
5910-01-397-05810262120003 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
Riimic, Llc Dba Sunair Electronics
5130-01-406-095526-212 INTERCHANGEABLE
Rivet Set,pneumatic Tool
Us Air Tool Co., Inc.
5340-01-542-708026212 INTERCHANGEABLE
Door,access,utility
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
26212 Drs Environmental Systems Inc (USA)
26212 Davey Compressor Co Div of Keco Industries Inc (USA)
Related Parts
3455-00-232-9037INTERCHANGEABLE
CUTTER,MILLING,SIDE
58-10127
5330-00-531-5907INTERCHANGEABLE
GASKET
S749A205
5331-01-271-2425INTERCHANGEABLE
O-RING
26-212
5910-01-397-0581INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
0262120003
5130-01-406-0955INTERCHANGEABLE
RIVET SET,PNEUMATIC TOOL
26-212
5340-01-542-7080INTERCHANGEABLE
DOOR,ACCESS,UTILITY
26212

Frequently Asked Questions

What is NSN 5310-00-858-9597?

NSN 5310-00-858-9597 is a Washer,flat, manufactured by Drs Environmental Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-858-9597?

NSN 5310-00-858-9597 has 2 cross-referenced part numbers: 26212 (Drs Environmental Systems Inc), 26212 (Davey Compressor Co Div of Keco Industries Inc).

What NSN replaces 5310-00-858-9597?

There are 6 known substitutes for 5310-00-858-9597: 3455-00-232-9037, 5330-00-531-5907, 5331-01-271-2425 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26212?

Key specifications for 26212: Material: WOOL OR COTTON OR CELLULOSE OR GLASS OVERALL; Center Hole Shape Style: ROUND; Overall Diameter: 0.500 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR. 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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