PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

48158Washer,key

Triumph Engine Control Systems Llc · NSN 5310-00-772-4984 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-772-4984 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-772-4984. Primary manufacturer part number: 48158.
Features
  • Washer,key — FSC 5310
  • Surface Treatment: PASSIVATE OVERALL
  • Style Designator: KEY
  • Material Document and Classification: MIL-S-5059,ANNEALED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Internal Key Quantity: 2
  • Distance From Centerline to Top of Internal Key: 0.048 INCHES NOMINAL IN
  • External Straight Key Width: 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
  • Material Thickness: 0.106 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 301 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-772-4984, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-772-4984
Primary Part Number48158
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusACTIVE
Surface TreatmentPASSIVATE OVERALL
Style DesignatorKEY
Material Document and ClassificationMIL-S-5059,ANNEALED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Internal Key Quantity2
Distance From Centerline to Top of Internal Key0.048 INCHES NOMINAL IN
External Straight Key Width0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
Material Thickness0.106 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
Internal Straight Key Width0.160 INCHES MAXIMUM IN
Overall Distance Including Keys1.550 INCHES MINIMUM AND 1.556 INCHES MAXIMUM IN
Hole Diameter1.150 INCHES MINIMUM AND 1.160 INCHES MAXIMUM IN
MaterialSTEEL COMP 301 OVERALL
Outside Diameter1.385 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN
External Key Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4010-00-130-536248158 INTERCHANGEABLE
Chain,welded
Kresl Power Equipment Inc Dba Infrapak
5310-00-815-91295710-37-30 INTERCHANGEABLE
Washer,flat
Seastrom Manufacturing Co Inc
3120-01-567-18294-81-58 INTERCHANGEABLE
Bushing,sleeve
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
48158 PRIMARY Triumph Engine Control Systems Llc (USA)
Related Parts
4010-00-130-5362INTERCHANGEABLE
CHAIN,WELDED
48158
5310-00-815-9129INTERCHANGEABLE
WASHER,FLAT
5710-37-30
3120-01-567-1829INTERCHANGEABLE
BUSHING,SLEEVE
4-81-58

Frequently Asked Questions

What is NSN 5310-00-772-4984?

NSN 5310-00-772-4984 is a Washer,key, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-772-4984?

NSN 5310-00-772-4984 has 1 cross-referenced part number: 48158 (Triumph Engine Control Systems Llc).

What NSN replaces 5310-00-772-4984?

There are 3 known substitutes for 5310-00-772-4984: 4010-00-130-5362, 5310-00-815-9129, 3120-01-567-1829. Verify interchangeability with system specifications before substitution.

What are the specifications of 48158?

Key specifications for 48158: Surface Treatment: PASSIVATE OVERALL; Style Designator: KEY; Material Document and Classification: MIL-S-5059,ANNEALED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Internal Key Quantity: 2. 13 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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