PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B4-8Washer,flat

Roller Bearing Co of America, Inc Div Pic Design · NSN 5310-01-092-2449 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-092-2449 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-092-2449. Primary manufacturer part number: B4-8.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.031 INCHES NOMINAL IN
  • Overall Diameter: 0.187 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • 2 verified cross-references
  • Primary manufacturer: Roller Bearing Co of America, Inc Div Pic Design
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-092-2449, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-092-2449
Primary Part NumberB4-8
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
Thickness0.031 INCHES NOMINAL IN
Overall Diameter0.187 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3030-00-232-597948B INTERCHANGEABLE
Belt,v
Gates Corporation
3120-00-420-577212253848 INTERCHANGEABLE
Bearing,plain,self-Aligning
Rbc Bearings Incorporated Div West Trenton Division
5310-00-687-7738 INTERCHANGEABLE
Washer,flat
4730-01-482-9059B-48 INTERCHANGEABLE
Pneumatic Muffler,exhaust-Intake
Hydro Engineering Innovation, Llc
6140-01-540-0000 INTERCHANGEABLE
Battery Set
5365-01-663-2021419366-8 INTERCHANGEABLE
Spacer,sleeve
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
B4-8 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
12273411 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
Related Parts
3030-00-232-5979INTERCHANGEABLE
BELT,V
48B
3120-00-420-5772INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
12253848
5310-00-687-7738INTERCHANGEABLE
WASHER,FLAT
4730-01-482-9059INTERCHANGEABLE
PNEUMATIC MUFFLER,EXHAUST-INTAKE
B-48
6140-01-540-0000INTERCHANGEABLE
BATTERY SET
5365-01-663-2021INTERCHANGEABLE
SPACER,SLEEVE
419366-8

Frequently Asked Questions

What is NSN 5310-01-092-2449?

NSN 5310-01-092-2449 is a Washer,flat, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-092-2449?

NSN 5310-01-092-2449 has 2 cross-referenced part numbers: B4-8 (Roller Bearing Co of America, Inc Div Pic Design), 12273411 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).

What NSN replaces 5310-01-092-2449?

There are 6 known substitutes for 5310-01-092-2449: 3030-00-232-5979, 3120-00-420-5772, 5310-00-687-7738 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B4-8?

Key specifications for B4-8: Thickness: 0.031 INCHES NOMINAL IN; Overall Diameter: 0.187 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING OVERALL. 3 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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