PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1229R122Washer,flat

American Trailers Inc · NSN 5310-00-701-4891 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-701-4891 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-701-4891. Primary manufacturer part number: 1229R122.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 1020 OVERALL
  • Surface Treatment: PHOSPHATE OVERALL
  • Thickness: 0.062 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1020 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-701-4891, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American Trailers Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 48 commercial cross-references from 42 manufacturers, 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
NSN5310-00-701-4891
Primary Part Number1229R122
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAmerican Trailers Inc
StatusACTIVE
Material Document and ClassificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 1020 OVERALL
Surface TreatmentPHOSPHATE OVERALL
Thickness0.062 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter2.250 INCHES NOMINAL IN
Hole Diameter1.531 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-081-908515A INTERCHANGEABLE
Wrench,open End
Martin Sprocket and Gear Inc
3110-00-112-602260089P1024 INTERCHANGEABLE
Bearing,roller,needle
Patterson Pump Co Div Patterson Pump Company
3110-00-120-332734159A9 INTERCHANGEABLE
Bearing,roller,needle
Terex American Crane Corp
5120-00-180-0833793 INTERCHANGEABLE
Seamer,sheet Metal,hand
Rw Acquisition, Llc Dba Roper Whitney Company
5120-00-212-4080 INTERCHANGEABLE
Roller,tube Bearing
5110-00-288-8737 INTERCHANGEABLE
Punch and Die,knockout
6625-00-305-2373 INTERCHANGEABLE
Socket Assembly
5935-00-352-911677C704744P002 INTERCHANGEABLE
Connector,plug,electrical
Lockheed Martin Corporation Div Rms
4820-00-409-4520730-1-2 INTERCHANGEABLE
Valve,foot,poppet
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
2530-00-420-4412128135R1 INTERCHANGEABLE
Spring
Navistar Intl Corp Truck Br Ohio Plant
Cross-Reference Index
Part NumberManufacturer
1229R122 Strick Trailer Co (USA)
1229R122 Dart Truck Co (USA)
S2506 Ericsson Inc Telcomcable Div (USA)
1229R122 Watson H S Co (USA)
31TA65 Oshkosh Defense Llc (USA)
1229R122 PRIMARY American Trailers Inc (USA)
1229R122 Rockwell Intl Corp Highway Brake and Trailer Axle Div Heavy Vehicles Components Opns (USA)
793 PRIMARY Trailmobile Inc Sub of the Pullman Co (USA)
1229R122 PRIMARY Abm Equipment, Llc (USA)
S2536 Ericsson Inc Telcomcable Div (USA)
37AX277 PRIMARY Mack Trucks Inc Parts Opn (USA)
1229R122 Butler Manufacturing Company Inc (USA)
1229R122 PRIMARY Alvey Inc (USA)
319M1 Diamond Reo Truck Co (USA)
1229R122 Corbitt Co Inc (USA)
25G0173A Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
73012 Little Giant Crane and Shovel Inc (USA)
1229R122 PRIMARY Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA)
143526 Brockway Motor Trucks Div of Mack Trucks Inc (USA)
1229R122 PRIMARY Utility Trailer Mfg Co (USA)
Related Parts
5120-00-081-9085INTERCHANGEABLE
WRENCH,OPEN END
15A
3110-00-112-6022INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
60089P1024
3110-00-120-3327INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
34159A9
5120-00-180-0833INTERCHANGEABLE
SEAMER,SHEET METAL,HAND
793
5120-00-212-4080INTERCHANGEABLE
ROLLER,TUBE BEARING
5110-00-288-8737INTERCHANGEABLE
PUNCH AND DIE,KNOCKOUT
6625-00-305-2373INTERCHANGEABLE
SOCKET ASSEMBLY
5935-00-352-9116INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
77C704744P002
4820-00-409-4520INTERCHANGEABLE
VALVE,FOOT,POPPET
730-1-2
2530-00-420-4412INTERCHANGEABLE
SPRING
128135R1
5330-00-428-2162INTERCHANGEABLE
GASKET
QD635
3030-00-439-5908INTERCHANGEABLE
BELT,V
658-049

Frequently Asked Questions

What is NSN 5310-00-701-4891?

NSN 5310-00-701-4891 is a Washer,flat, manufactured by American Trailers Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-701-4891?

NSN 5310-00-701-4891 has 48 cross-referenced part numbers: 1229R122 (Strick Trailer Co), 1229R122 (Dart Truck Co), S2506 (Ericsson Inc Telcomcable Div), 1229R122 (Watson H S Co), 31TA65 (Oshkosh Defense Llc) and 43 more.

What NSN replaces 5310-00-701-4891?

There are 12 known substitutes for 5310-00-701-4891: 5120-00-081-9085, 3110-00-112-6022, 3110-00-120-3327 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1229R122?

Key specifications for 1229R122: Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 1020 OVERALL; Surface Treatment: PHOSPHATE OVERALL; Thickness: 0.062 INCHES NOMINAL IN. 9 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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