PartsTable TECHNICAL DATA SHEET
NSN 5310-00-770-7688Government record, cited

Washer, Key5310-00-770-7688

NSN 5310-00-770-7688 · NIIN 007707688 · Part number 7707688
U S Army Tank Automotive Command Amsta-Im-Mm · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 19207
Government record, cited
NSN 5310-00-770-7688 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-770-7688. Manufacturer of record part number: 7707688.
Also searched as  5310-00-770-7688 · 5310007707688 · NIIN 007707688 · 00-770-7688 · FSC 5310 Nuts and Washers · CAGE 19207 · 7707688 · 6765466
Nearby stock numbers  ·
Features
  • Washer,key — FSC 5310
  • Internal Prebent Key Width: 0.156 INCHES NOMINAL IN
  • Overall Distance Including Keys: 2.250 INCHES NOMINAL IN
  • Outside Diameter: 1.812 INCHES NOMINAL IN
  • Material Thickness: 0.055 INCHES MAXIMUM IN
  • External Straight Key Width: 0.156 INCHES NOMINAL IN
  • External Key Quantity: 18
  • Internal Prebent Key Length: 0.156 INCHES NOMINAL IN
Identification
  • NSN: 5310-00-770-7688
  • NIIN: 007707688
  • FSC: 5310 — Nuts and Washers
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 7707688
  • Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
General Description

The Washer,key, cataloged under National Stock Number 5310-00-770-7688, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-770-7688
Primary Part Number7707688
Item NameWasher,key
FSC / FSG5310 / 53 — Nuts and Washers
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusACTIVE
Internal Prebent Key Width0.156 INCHES NOMINAL IN
Overall Distance Including Keys2.250 INCHES NOMINAL IN
Outside Diameter1.812 INCHES NOMINAL IN
Material Thickness0.055 INCHES MAXIMUM IN
External Straight Key Width0.156 INCHES NOMINAL IN
External Key Quantity18
Internal Prebent Key Length0.156 INCHES NOMINAL IN
Internal Key Quantity2
Hole Diameter1.281 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
7707688 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
6765466 PRIMARY General Motors Corp (USA)
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040
5310-00-000-0040 · Item name not on file
5310-00-000-0077
NUT,PLAIN,ROUND
5310-00-000-0079
WASHER,FLAT
5310-00-000-0079
WASHER,FLAT
5310-00-000-1146
5310-00-000-1146 · Item name not on file
5310-00-000-3815
5310-00-000-3815 · Item name not on file
5310-00-000-4532
5310-00-000-4532 · Item name not on file
5310-00-000-4540
5310-00-000-4540 · Item name not on file

Frequently Asked Questions

What is NSN 5310-00-770-7688?

NSN 5310-00-770-7688 is a Washer,key, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-00-770-7688?

NSN 5310-00-770-7688 has 2 manufacturer part numbers on file: 7707688 (U S Army Tank Automotive Command Amsta-Im-Mm), 6765466 (General Motors Corp).

What are the specifications of 7707688?

Key specifications for 7707688: Internal Prebent Key Width: 0.156 INCHES NOMINAL IN; Overall Distance Including Keys: 2.250 INCHES NOMINAL IN; Outside Diameter: 1.812 INCHES NOMINAL IN; Material Thickness: 0.055 INCHES MAXIMUM IN. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-00-770-7688 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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