PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3337Fork Assembly,master Piston

Jacobs Mfg Co the · NSN 2990-01-157-3756 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-157-3756 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-157-3756. Primary manufacturer part number: 3337.
Features
  • Fork Assembly,master Piston — FSC 2990
  • 7 verified cross-references
  • Primary manufacturer: Jacobs Mfg Co the
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fork Assembly,master Piston, cataloged under National Stock Number 2990-01-157-3756, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Jacobs Mfg Co the. This item has 7 commercial cross-references from 4 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
NSN2990-01-157-3756
Primary Part Number3337
Item NameFork Assembly,master Piston
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerJacobs Mfg Co the
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-054-15421A3337 INTERCHANGEABLE
Plug,expansion
Fwd Seagrave Holdings Lp
5310-00-086-97033823 INTERCHANGEABLE
Washer,friction
L3 Technologies, Inc. Div L3 Keo
6670-00-129-9877 INTERCHANGEABLE
Scale,weighing
5930-00-136-4408 INTERCHANGEABLE
Switch,toggle
5307-00-156-125938-23 INTERCHANGEABLE
Stud,plain
Textron Lycoming Inc Williamsport Plant
2805-00-353-7950G337 INTERCHANGEABLE
Guide,valve Stem
Eaton Corp Dba Eaton Aerospace Jackson
5307-00-366-33948113823 INTERCHANGEABLE
Stud
General Motors Corp
2420-00-405-00413823 INTERCHANGEABLE
Plate,floor
R and J Metal Fabricators Inc
5305-00-487-5110 INTERCHANGEABLE
Screw,cap,socket Head
5342-00-496-96703512-16 INTERCHANGEABLE
Hinge,end
Pdi Ground Support Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
012517 Jacobs Mfg Co the (USA)
3337 PRIMARY Jacobs Mfg Co the (USA)
10513127 General Dynamics Land Systems Canadacorp (CAN)
2AF25 Oshkosh Defense Llc (USA)
3823 Jacobs Mfg Co the (USA)
003337 Jacobs Mfg Co the (USA)
2AF25 Oshkosh Corp (USA)
Related Parts
5340-00-054-1542INTERCHANGEABLE
PLUG,EXPANSION
1A3337
5310-00-086-9703INTERCHANGEABLE
WASHER,FRICTION
3823
6670-00-129-9877INTERCHANGEABLE
SCALE,WEIGHING
5930-00-136-4408INTERCHANGEABLE
SWITCH,TOGGLE
5307-00-156-1259INTERCHANGEABLE
STUD,PLAIN
38-23
2805-00-353-7950INTERCHANGEABLE
GUIDE,VALVE STEM
G337
5307-00-366-3394INTERCHANGEABLE
STUD
8113823
2420-00-405-0041INTERCHANGEABLE
PLATE,FLOOR
3823
5305-00-487-5110INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5342-00-496-9670INTERCHANGEABLE
HINGE,END
3512-16
5315-00-564-0559INTERCHANGEABLE
PIN,DRIVE,POWER ACTUATED
3337
6150-00-574-9021INTERCHANGEABLE
BUS,CONDUCTOR
0360-1260

Frequently Asked Questions

What is NSN 2990-01-157-3756?

NSN 2990-01-157-3756 is a Fork Assembly,master Piston, manufactured by Jacobs Mfg Co the, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-157-3756?

NSN 2990-01-157-3756 has 7 cross-referenced part numbers: 012517 (Jacobs Mfg Co the), 3337 (Jacobs Mfg Co the), 10513127 (General Dynamics Land Systems Canadacorp), 2AF25 (Oshkosh Defense Llc), 3823 (Jacobs Mfg Co the) and 2 more.

What NSN replaces 2990-01-157-3756?

There are 12 known substitutes for 2990-01-157-3756: 5340-00-054-1542, 5310-00-086-9703, 6670-00-129-9877 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3337?

Key specifications for 3337: Part Name Assigned by Controlling Agency: FORK ASSEMBLY - MASTER PISTON; End Item Identification: 2530-01-357-6405 ENGINE HOUSING ASSEMBLY; 2320-01-318-9902 HET (HEAVY EQUIPMENT TRANSPORTER); 2320-01-304-2277 AND 2320-01-304-2278 PLS (PALLETIZED LOADING SYSTEM). 2 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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