PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B2-4Washer,flat

Roller Bearing Co of America, Inc Div Pic Design · NSN 5310-01-100-8147 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-100-8147 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-100-8147. Primary manufacturer part number: B2-4.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Material: COPPER ALLOY OVERALL
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.620 INCHES NOMINAL IN
  • Thickness: 0.032 INCHES NOMINAL IN
  • Hole Diameter: 0.380 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-100-8147, 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 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-100-8147
Primary Part NumberB2-4
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
MaterialCOPPER ALLOY OVERALL
Peripheral Shape StyleROUND
Overall Diameter0.620 INCHES NOMINAL IN
Thickness0.032 INCHES NOMINAL IN
Hole Diameter0.380 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-155-9162A24 INTERCHANGEABLE
Bearing,ball,thrust
Gwilliam Company, Inc. Div Ball & Roller Bearing Division
3455-00-224-7279B-24 INTERCHANGEABLE
Cutter,milling,end
Pohl Tool Co
5330-00-460-2666 INTERCHANGEABLE
Gasket
5945-00-547-8721B24 INTERCHANGEABLE
Thermal Overload Re
Ward Leonard Ct Llc
5340-00-619-0580 INTERCHANGEABLE
Clamp,loop
5330-00-702-2079A00401 INTERCHANGEABLE
Gasket
Mueller Brass Co.
3110-00-807-1711180228 INTERCHANGEABLE
Bearing,roller,needle
Woodward, Inc. Div Fuel Systems and Controls
3110-00-812-9523 INTERCHANGEABLE
Bearing,roller,tapered
5330-00-876-7221 INTERCHANGEABLE
Gasket
3415-00-929-0018B24 INTERCHANGEABLE
Grinding Machine,surface,rotary
Devlieg Bullard II Inc.
Cross-Reference Index
Part NumberManufacturer
B2-4 PRIMARY Roller Bearing Co of America, Inc Div Pic Design (USA)
12279042 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
Related Parts
3110-00-155-9162INTERCHANGEABLE
BEARING,BALL,THRUST
A24
3455-00-224-7279INTERCHANGEABLE
CUTTER,MILLING,END
B-24
5330-00-460-2666INTERCHANGEABLE
GASKET
5945-00-547-8721INTERCHANGEABLE
THERMAL OVERLOAD RE
B24
5340-00-619-0580INTERCHANGEABLE
CLAMP,LOOP
5330-00-702-2079INTERCHANGEABLE
GASKET
A00401
3110-00-807-1711INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
180228
3110-00-812-9523INTERCHANGEABLE
BEARING,ROLLER,TAPERED
5330-00-876-7221INTERCHANGEABLE
GASKET
3415-00-929-0018INTERCHANGEABLE
GRINDING MACHINE,SURFACE,ROTARY
B24
5365-01-064-8168INTERCHANGEABLE
SHIM
B2-4
7350-01-218-9308INTERCHANGEABLE
BOWL,EATING
B24

Frequently Asked Questions

What is NSN 5310-01-100-8147?

NSN 5310-01-100-8147 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 5310-01-100-8147?

NSN 5310-01-100-8147 has 2 cross-referenced part numbers: B2-4 (Roller Bearing Co of America, Inc Div Pic Design), 12279042 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).

What NSN replaces 5310-01-100-8147?

There are 12 known substitutes for 5310-01-100-8147: 3110-00-155-9162, 3455-00-224-7279, 5330-00-460-2666 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B2-4?

Key specifications for B2-4: Cross-Sectional Shape Style: RECTANGULAR; Center Hole Shape Style: ROUND; Material: COPPER ALLOY OVERALL; Peripheral Shape Style: ROUND. 8 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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