PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

13388-FWasher,key

Oshkosh Defense Llc · NSN 5310-00-186-0977 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-186-0977 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-186-0977. Primary manufacturer part number: 13388-F.
Features
  • Washer,key — FSC 5310
  • Material: STEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
  • Style Designator: KEY
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Hole Diameter: 3.582 INCHES MINIMUM AND 3.612 INCHES MAXIMUM IN
  • External Prebent Key Width: 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
  • Hardness Rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
  • Internal Prebent Key Length: 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1005 or Steel Comp 1006 or Steel Comp 1008 or Steel Comp 1010 or Steel Comp 1015 or Steel Comp 1016 or Steel Comp 1018 or Steel Comp 1025 or Steel Comp 1030 or Steel Comp 1035 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-186-0977, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Oshkosh Defense Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 23 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-186-0977
Primary Part Number13388-F
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerOshkosh Defense Llc
StatusCANCELLED
MaterialSTEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
Style DesignatorKEY
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Hole Diameter3.582 INCHES MINIMUM AND 3.612 INCHES MAXIMUM IN
External Prebent Key Width0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Hardness Rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
Internal Prebent Key Length0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
External Key Quantity19
Material Thickness0.088 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
Overall Distance Including Keys4.938 INCHES MAXIMUM IN
Outside Diameter4.281 INCHES MINIMUM AND 4.326 INCHES MAXIMUM IN
Internal Prebent Key Width0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
3426-00-243-3169 INTERCHANGEABLE
Tank,hot Dip,directly Heated
2920-00-294-38963076 INTERCHANGEABLE
Spark Plug
Allied-Signal Inc Autolite Div
5999-00-499-7441W18 INTERCHANGEABLE
Heater,thermal Release
Ward Leonard Ct Llc
4310-01-299-0493W18 INTERCHANGEABLE
Breather
Emglo Products Corp
6750-01-427-1037 INTERCHANGEABLE
Film,photographic
3110-01-468-655718439 INTERCHANGEABLE
Bearing,ball,annular
Belfort Instrument Company
6510-01-588-2442MSC9348EP INTERCHANGEABLE
Dressing,surgical
Medline Industries, Lp
2815-01-669-0722 INTERCHANGEABLE
Crankcase
Cross-Reference Index
Part NumberManufacturer
13388-F Oshkosh Defense Llc (USA)
09-20048 Kolberg-Pioneer, Inc (USA)
HR22311 Ecolaire Inc Baldwin-Hamilton Co Div (USA)
20682PCM1176A Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
W18 Timken Co Div the Timken Company (USA)
35051-18-AA Reliance Electric (USA)
EC8000PCEC6034 Capitol Gears Inc
322661PC163 Hercules Engine Co Inc (USA)
90148PCM1176A Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
X207190PC74 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
321079 Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
322660PC163 Capitol Gears Inc
DR2527PC33 Allis-Chalmers Corp (USA)
60152DPC19 Patterson Pump Co Div Patterson Pump Company (USA)
13388-F Oshkosh Corp (USA)
X8841APCM1176A Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
53808MPC25 Stone Safety Corp (USA)
R18439 Komatsu America Corporation (USA)
61209-89 Patterson Pump Co Div Patterson Pump Company (USA)
90097PCM1176A Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
3426-00-243-3169INTERCHANGEABLE
TANK,HOT DIP,DIRECTLY HEATED
2920-00-294-3896INTERCHANGEABLE
SPARK PLUG
3076
5999-00-499-7441INTERCHANGEABLE
HEATER,THERMAL RELEASE
W18
4310-01-299-0493INTERCHANGEABLE
BREATHER
W18
6750-01-427-1037INTERCHANGEABLE
FILM,PHOTOGRAPHIC
3110-01-468-6557INTERCHANGEABLE
BEARING,BALL,ANNULAR
18439
6510-01-588-2442INTERCHANGEABLE
DRESSING,SURGICAL
MSC9348EP
2815-01-669-0722INTERCHANGEABLE
CRANKCASE

Frequently Asked Questions

What is NSN 5310-00-186-0977?

NSN 5310-00-186-0977 is a Washer,key, manufactured by Oshkosh Defense Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-186-0977?

NSN 5310-00-186-0977 has 50 cross-referenced part numbers: 13388-F (Oshkosh Defense Llc), 09-20048 (Kolberg-Pioneer, Inc), HR22311 (Ecolaire Inc Baldwin-Hamilton Co Div), 20682PCM1176A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), W18 (Timken Co Div the Timken Company) and 45 more.

What NSN replaces 5310-00-186-0977?

There are 8 known substitutes for 5310-00-186-0977: 3426-00-243-3169, 2920-00-294-3896, 5999-00-499-7441 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 13388-F?

Key specifications for 13388-F: Material: STEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL; Style Designator: KEY; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Hole Diameter: 3.582 INCHES MINIMUM AND 3.612 INCHES MAXIMUM IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-186-0977 still in active supply?

NSN 5310-00-186-0977 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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