PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B21Pin,piston

Gardner Denver Inc. · NSN 4310-00-829-5001 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-829-5001 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-829-5001. Primary manufacturer part number: B21.
Features
  • Pin,piston — FSC 4310
  • Casehardening Indicator: NOT CASEHARDENED
  • Bore Style: INSIDE CHAMFER STRAIGHT-THRU BORE
  • Body Style: CHAMFERED ENDS
  • Material: STEEL COMP 1016
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 1016 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1016 ASSN STD SINGLE MATERIAL RESPONSE
  • FSC Application Data: AIR COMPRESSOR
  • Outside Diameter: 0.56250 INCHES MINIMUM AND 0.56300 INCHES MAXIMUM IN
Applications
  • Applications requiring Steel Comp 1016 construction
General Description

The Pin,piston, cataloged under National Stock Number 4310-00-829-5001, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Gardner Denver Inc.. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4310-00-829-5001
Primary Part NumberB21
Item NamePin,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerGardner Denver Inc.
StatusACTIVE
Casehardening IndicatorNOT CASEHARDENED
Bore StyleINSIDE CHAMFER STRAIGHT-THRU BORE
Body StyleCHAMFERED ENDS
MaterialSTEEL COMP 1016
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 1016 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1016 ASSN STD SINGLE MATERIAL RESPONSE
FSC Application DataAIR COMPRESSOR
Outside Diameter0.56250 INCHES MINIMUM AND 0.56300 INCHES MAXIMUM IN
End Chamfer Angle in Deg45.0
Bore Diameter0.3020 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM IN
Countersink Angle in Deg45.0
Body Length2.0525 INCHES MINIMUM AND 2.0725 INCHES MAXIMUM IN
Metallic Hardness Rating60.0 MINIMUM ROCKWELL C AND 63.0 MAXIMUM ROCKWELL C
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-014-2434SAE J512 7 040110B INTERCHANGEABLE
Inverted Nut,tube Coupling
Sae International Dba Sae International
5999-00-045-6309B2-1 INTERCHANGEABLE
Heater,thermal Release
Schneider Electric Usa, Inc.
5910-00-196-0084 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
7320-00-336-5641B21 INTERCHANGEABLE
Shaft Assy
Insinger Machine Co
6680-00-394-7334B21 INTERCHANGEABLE
Tip,triangular
Schulze Mfg., Inc.
5999-00-419-0228B21 INTERCHANGEABLE
Heater,thermal Release
Ward Leonard Ct Llc
5365-00-685-7023402265-2 INTERCHANGEABLE
Shim
Raytheon Company Dba Raytheon
3110-01-070-7981 INTERCHANGEABLE
Bearing,ball,annular
3110-01-164-1107B-21 INTERCHANGEABLE
Collar,bearing
United States Monorail Corp Stanspec Div
5120-01-278-4820B-21 INTERCHANGEABLE
Screwdriver,flat Tip
Ngk Metals Corporation Dba N G K Berylco
Cross-Reference Index
Part NumberManufacturer
P2038A Gardner Denver Inc. (USA)
B21 PRIMARY Gardner Denver Inc. (USA)
Related Parts
4730-00-014-2434INTERCHANGEABLE
INVERTED NUT,TUBE COUPLING
SAE J512 7 040110B
5999-00-045-6309INTERCHANGEABLE
HEATER,THERMAL RELEASE
B2-1
5910-00-196-0084INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
7320-00-336-5641INTERCHANGEABLE
SHAFT ASSY
B21
6680-00-394-7334INTERCHANGEABLE
TIP,TRIANGULAR
B21
5999-00-419-0228INTERCHANGEABLE
HEATER,THERMAL RELEASE
B21
5365-00-685-7023INTERCHANGEABLE
SHIM
402265-2
3110-01-070-7981INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-01-164-1107INTERCHANGEABLE
COLLAR,BEARING
B-21
5120-01-278-4820INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
B-21
3010-01-284-5849INTERCHANGEABLE
DISC
B 21
5355-01-379-7666INTERCHANGEABLE
KNOB

Frequently Asked Questions

What is NSN 4310-00-829-5001?

NSN 4310-00-829-5001 is a Pin,piston, manufactured by Gardner Denver Inc., classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-829-5001?

NSN 4310-00-829-5001 has 2 cross-referenced part numbers: P2038A (Gardner Denver Inc.), B21 (Gardner Denver Inc.).

What NSN replaces 4310-00-829-5001?

There are 12 known substitutes for 4310-00-829-5001: 4730-00-014-2434, 5999-00-045-6309, 5910-00-196-0084 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B21?

Key specifications for B21: Casehardening Indicator: NOT CASEHARDENED; Bore Style: INSIDE CHAMFER STRAIGHT-THRU BORE; Body Style: CHAMFERED ENDS; Material: STEEL COMP 1016. 12 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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