PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1A4516Washer,key

Napco International Llc Dba Napco International Inc · NSN 5310-00-833-1481 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-833-1481 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-833-1481. Primary manufacturer part number: 1A4516.
Features
  • Washer,key — FSC 5310
  • Style Designator: KEY
  • Material: STEEL OVERALL
  • Distance From Centerline to Inside of Prebent Key: 0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM IN
  • Internal Prebent Key Width: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
  • Material Thickness: 0.042 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
  • Outside Diameter: 1.870 INCHES MINIMUM AND 1.880 INCHES MAXIMUM IN
  • Hole Diameter: 1.011 INCHES MINIMUM AND 1.021 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-833-1481, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 10 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
NSN5310-00-833-1481
Primary Part Number1A4516
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusCANCELLED
Style DesignatorKEY
MaterialSTEEL OVERALL
Distance From Centerline to Inside of Prebent Key0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM IN
Internal Prebent Key Width0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
Material Thickness0.042 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
Outside Diameter1.870 INCHES MINIMUM AND 1.880 INCHES MAXIMUM IN
Hole Diameter1.011 INCHES MINIMUM AND 1.021 INCHES MAXIMUM IN
Internal Prebent Key Length0.042 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
8030-00-087-8630 INTERCHANGEABLE
Antiseize Compound
5945-00-257-774126203-2 INTERCHANGEABLE
Relay,electromagnetic
Raytheon Company Dba Raytheon
6625-00-678-090411039A INTERCHANGEABLE
Voltage Divider,cap
Keysight Technologies Inc
5960-00-786-796791646 INTERCHANGEABLE
Retainer,electron Tube
L3harris Technologies, Inc Div Space & Airborne Systems
5995-01-283-8663209-077-134-104 INTERCHANGEABLE
Cord Assembly,electrical
Bell Textron Inc
5910-01-310-438926203 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
Electro Scientific Industries Inc
5340-01-556-130826203 INTERCHANGEABLE
Cover,access
L3harris Technologies, Inc Div Space & Airborne Systems
7025-01-567-5649UPGPERDRAM32B INTERCHANGEABLE
Memory Card,personal Computer
Network Equipment Technologies Inc
Cross-Reference Index
Part NumberManufacturer
91646 Graham Paige Corp (USA)
1A4516 PRIMARY Napco International Llc Dba Napco International Inc (USA)
11039A Hercules Engine Co Inc (USA)
11039A PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
8331481 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
2UUA0699 PRIMARY Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
2UUA0699 PRIMARY Abm Equipment, Llc (USA)
26203 Celtrac Corp (USA)
61324C Diamond Reo Truck Co (USA)
26203 White Farm Equipment Co Sub of Tic Investment Corp
Related Parts
8030-00-087-8630INTERCHANGEABLE
ANTISEIZE COMPOUND
5945-00-257-7741INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
26203-2
6625-00-678-0904INTERCHANGEABLE
VOLTAGE DIVIDER,CAP
11039A
5960-00-786-7967INTERCHANGEABLE
RETAINER,ELECTRON TUBE
91646
5995-01-283-8663INTERCHANGEABLE
CORD ASSEMBLY,ELECTRICAL
209-077-134-104
5910-01-310-4389INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR
26203
5340-01-556-1308INTERCHANGEABLE
COVER,ACCESS
26203
7025-01-567-5649INTERCHANGEABLE
MEMORY CARD,PERSONAL COMPUTER
UPGPERDRAM32B

Frequently Asked Questions

What is NSN 5310-00-833-1481?

NSN 5310-00-833-1481 is a Washer,key, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-833-1481?

NSN 5310-00-833-1481 has 10 cross-referenced part numbers: 91646 (Graham Paige Corp), 1A4516 (Napco International Llc Dba Napco International Inc), 11039A (Hercules Engine Co Inc), 11039A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 8331481 (U S Army Tank Automotive Command Amsta-Im-Mm) and 5 more.

What NSN replaces 5310-00-833-1481?

There are 8 known substitutes for 5310-00-833-1481: 8030-00-087-8630, 5945-00-257-7741, 6625-00-678-0904 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1A4516?

Key specifications for 1A4516: Style Designator: KEY; Material: STEEL OVERALL; Distance From Centerline to Inside of Prebent Key: 0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM IN; Internal Prebent Key Width: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-833-1481 still in active supply?

NSN 5310-00-833-1481 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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