PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11012-28Washer,flat

Air & Liquid Systems Corporation Dba Buffalo Pumps · NSN 5310-00-946-2830 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-946-2830 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-946-2830. Primary manufacturer part number: 11012-28.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 1.0625 INCHES NOMINAL IN
  • Material: NICKEL ALLOY OVERALL
  • Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.144 INCHES NOMINAL IN
  • Overall Diameter: 2.250 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-946-2830, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Air & Liquid Systems Corporation Dba Buffalo Pumps. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-946-2830
Primary Part Number11012-28
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAir & Liquid Systems Corporation Dba Buffalo Pumps
StatusACTIVE
Hole Diameter1.0625 INCHES NOMINAL IN
MaterialNICKEL ALLOY OVERALL
Material Document and ClassificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.144 INCHES NOMINAL IN
Overall Diameter2.250 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5331-00-726-07970-1932 INTERCHANGEABLE
O-Ring
Minor Rubber Co Inc
2920-01-324-0671SAW-13240671 INTERCHANGEABLE
Generator,engine Accessory
Southern Automotive Wholesalers, Inc
Cross-Reference Index
Part NumberManufacturer
059209 Zf Industrieantriebe Witten Gmbh (DEU)
11012-28 PRIMARY Air & Liquid Systems Corporation Dba Buffalo Pumps (USA)
01932 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
CA11057PC16 Air & Liquid Systems Corporation Dba Buffalo Pumps (USA)
5310PL1280355 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
5331-00-726-0797INTERCHANGEABLE
O-RING
0-1932
2920-01-324-0671INTERCHANGEABLE
GENERATOR,ENGINE ACCESSORY
SAW-13240671

Frequently Asked Questions

What is NSN 5310-00-946-2830?

NSN 5310-00-946-2830 is a Washer,flat, manufactured by Air & Liquid Systems Corporation Dba Buffalo Pumps, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-946-2830?

NSN 5310-00-946-2830 has 5 cross-referenced part numbers: 059209 (Zf Industrieantriebe Witten Gmbh), 11012-28 (Air & Liquid Systems Corporation Dba Buffalo Pumps), 01932 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), CA11057PC16 (Air & Liquid Systems Corporation Dba Buffalo Pumps), 5310PL1280355 (Jednolity Indeks Materialowy - Uniform Material Index).

What NSN replaces 5310-00-946-2830?

There are 2 known substitutes for 5310-00-946-2830: 5331-00-726-0797, 2920-01-324-0671. Verify interchangeability with system specifications before substitution.

What are the specifications of 11012-28?

Key specifications for 11012-28: Hole Diameter: 1.0625 INCHES NOMINAL IN; Material: NICKEL ALLOY OVERALL; Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Peripheral Shape Style: ROUND. 8 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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