PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1K627Washer,flat

Caterpillar Inc Div Caterpillar Defense · NSN 5310-00-270-2072 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-270-2072 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-270-2072. Primary manufacturer part number: 1K627.
Features
  • Washer,flat — FSC 5310
  • Center Hole Shape Style: ROUND
  • Thickness: 0.109 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Overall Diameter: 1.375 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.641 INCHES NOMINAL IN
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 5310-00-270-2072, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN5310-00-270-2072
Primary Part Number1K627
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Center Hole Shape StyleROUND
Thickness0.109 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Overall Diameter1.375 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Hole Diameter0.641 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6695-00-013-480510650 INTERCHANGEABLE
Meter Movement
Astronautics Corporation of America
5330-00-164-880910650 INTERCHANGEABLE
Pump Repair Kit
Oberdorfer Foundries Inc
2920-00-237-0115YB79 INTERCHANGEABLE
Stator,engine Generator
Wisconsin Motors, Llc
3040-00-437-1040 INTERCHANGEABLE
Cam,control
2990-00-489-5958T-10650 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
6685-00-618-6696 INTERCHANGEABLE
Gage,pressure,dial Indicating
3120-00-661-764571433 INTERCHANGEABLE
Bearing,sleeve
Hamilton Sundstrand Corporation Dba Collins Aerospace
5340-00-878-0342106-50 INTERCHANGEABLE
Bumper
Kirkhill Inc Div Kirkhill Inc, Haskon Division
5950-00-944-4792995559-16 INTERCHANGEABLE
Transformer,radio Frequency
Raytheon Company Div Rmd Strategic
6510-01-040-0767 INTERCHANGEABLE
Sponge,surgical
Cross-Reference Index
Part NumberManufacturer
1K0627 Caterpillar Inc Div Caterpillar Defense (USA)
1K627 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Q8WD PRIMARY Garwood/feller Inc Garwood Winch Div (USA)
10650 PRIMARY Garwood/feller Inc Garwood Winch Div (USA)
Related Parts
6695-00-013-4805INTERCHANGEABLE
METER MOVEMENT
10650
5330-00-164-8809INTERCHANGEABLE
PUMP REPAIR KIT
10650
2920-00-237-0115INTERCHANGEABLE
STATOR,ENGINE GENERATOR
YB79
3040-00-437-1040INTERCHANGEABLE
CAM,CONTROL
2990-00-489-5958INTERCHANGEABLE
MUFFLER,EXHAUST
T-10650
6685-00-618-6696INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
3120-00-661-7645INTERCHANGEABLE
BEARING,SLEEVE
71433
5340-00-878-0342INTERCHANGEABLE
BUMPER
106-50
5950-00-944-4792INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
995559-16
6510-01-040-0767INTERCHANGEABLE
SPONGE,SURGICAL
5360-01-093-0615INTERCHANGEABLE
SPRING,RELIEF VALVE
10650
4330-01-151-8975INTERCHANGEABLE
COVER,FLUID FILTER
12-02C

Frequently Asked Questions

What is NSN 5310-00-270-2072?

NSN 5310-00-270-2072 is a Washer,flat, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-270-2072?

NSN 5310-00-270-2072 has 4 cross-referenced part numbers: 1K0627 (Caterpillar Inc Div Caterpillar Defense), 1K627 (Caterpillar Inc Div Caterpillar Defense), Q8WD (Garwood/feller Inc Garwood Winch Div), 10650 (Garwood/feller Inc Garwood Winch Div).

What NSN replaces 5310-00-270-2072?

There are 12 known substitutes for 5310-00-270-2072: 6695-00-013-4805, 5330-00-164-8809, 2920-00-237-0115 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1K627?

Key specifications for 1K627: Center Hole Shape Style: ROUND; Thickness: 0.109 INCHES NOMINAL IN; Material: STEEL OVERALL; Overall Diameter: 1.375 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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