PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SP1-2Washer,flat

National Foam Inc Dba National Foam Div National Foam · NSN 5310-00-290-8992 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-290-8992 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-290-8992. Primary manufacturer part number: SP1-2.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 2.688 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Material: RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
  • Hole Diameter: 1.625 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.125 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Rubber Natural or Rubber Synthetic Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-290-8992, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Foam Inc Dba National Foam Div National Foam. 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-290-8992
Primary Part NumberSP1-2
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Foam Inc Dba National Foam Div National Foam
StatusACTIVE
Overall Diameter2.688 INCHES NOMINAL IN
Peripheral Shape StyleROUND
MaterialRUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
Hole Diameter1.625 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.125 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2930-00-200-8138SP-29 INTERCHANGEABLE
Cap,filler Opening
Stant Mfg Co Inc
5305-00-269-646346031PC5 INTERCHANGEABLE
Screw,machine
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6240-00-449-2070517-4-91930-000 INTERCHANGEABLE
Lamp,incandescent
Eaton Limited
5340-00-804-1252 INTERCHANGEABLE
Plug,protective,dust and Moistur
5305-01-205-2525 INTERCHANGEABLE
Screw
4820-01-323-6165SPD-C1Q-A INTERCHANGEABLE
Valve,ball
Imi Critical Engr Pbm Llc
4510-01-341-7040SP12 INTERCHANGEABLE
Head,eye Wash,fountain
Haws Corporation
5310-01-435-6444SP-12 INTERCHANGEABLE
Washer,flat
Morton Machine Works
4235-01-450-0806STS-SP-001 INTERCHANGEABLE
Spill Clean-Up Kit,hazardous Mat
Safe-Tech Solutions Llc Dba Safe Tech Solutions Llc
4730-01-693-8272SP-12 INTERCHANGEABLE
Flange,pipe,blind
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
Cross-Reference Index
Part NumberManufacturer
SP1-2 National Foam Inc Dba National Foam Div National Foam (USA)
Related Parts
2930-00-200-8138INTERCHANGEABLE
CAP,FILLER OPENING
SP-29
5305-00-269-6463INTERCHANGEABLE
SCREW,MACHINE
46031PC5
6240-00-449-2070INTERCHANGEABLE
LAMP,INCANDESCENT
517-4-91930-000
5340-00-804-1252INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
5305-01-205-2525INTERCHANGEABLE
SCREW
4820-01-323-6165INTERCHANGEABLE
VALVE,BALL
SPD-C1Q-A
4510-01-341-7040INTERCHANGEABLE
HEAD,EYE WASH,FOUNTAIN
SP12
5310-01-435-6444INTERCHANGEABLE
WASHER,FLAT
SP-12
4235-01-450-0806INTERCHANGEABLE
SPILL CLEAN-UP KIT,HAZARDOUS MAT
STS-SP-001
4730-01-693-8272INTERCHANGEABLE
FLANGE,PIPE,BLIND
SP-12

Frequently Asked Questions

What is NSN 5310-00-290-8992?

NSN 5310-00-290-8992 is a Washer,flat, manufactured by National Foam Inc Dba National Foam Div National Foam, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-290-8992?

NSN 5310-00-290-8992 has 1 cross-referenced part number: SP1-2 (National Foam Inc Dba National Foam Div National Foam).

What NSN replaces 5310-00-290-8992?

There are 10 known substitutes for 5310-00-290-8992: 2930-00-200-8138, 5305-00-269-6463, 6240-00-449-2070 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SP1-2?

Key specifications for SP1-2: Overall Diameter: 2.688 INCHES NOMINAL IN; Peripheral Shape Style: ROUND; Material: RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL; Hole Diameter: 1.625 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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