NSN 3431-01-388-7687, 3431013887687
WELDING MACHINE,INVERTER

Federal Supply Classification: FSC 3431 - Electric Arc Welding Equipment
National Item Identification Number: NIIN 013887687
Codification Country: United States
Item Name Code: INC 51696
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 3431-01-388-7687

National Stock Number (NSN) 3431-01-388-7687, or NIIN 013887687, (welding machine,inverter) was assigned April 7, 1994 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Oct 25, 2007, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 51696. [AN ITEM DESIGNED TO PERFORM MULTIWELDING AND/OR CUTTING OPERATIONS BY USING A UNIQUE ELECTRICAL ARRANGEMENT TO CONTROL THE PROCESS.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3431013887687 does not contain precious metals.

This NSN is associated to Schedule B 8515902000: welding machine parts and parts of apparatus. The Schedule B End Use is listed as metalworking machine tools. NAICS classification category 333992: welding and soldering equipment manufacturing.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) 300 AMPS AT 32 VOLTS AT 60 DUTY CYCLE FOR THREE PHASE; 225 AMPS AT 29 VOLTS AT 60 DUTY CYCLE FOR SINGLE PHASE; HEIGHT 17 3/8 IN.; WIDTH 12 IN.; DEPTH 19 1/2 IN.; WEIGHT 77 POUNDS
UNABLE TO DECODE: (TEXT) UNABLE TO DECODE
SPECIAL FEATURES: (FEAT) 50/60 HERTZ SINGLE OR THREE PHASE INPUT POWER; NEMA CLASS 1 RATING; PERFORMS SMAW(STICK), SCRATCH START GTAW (TIG), AND PULSED GTAW WELDING, AND AAC; AUTO LINK AUTOMATIC VOLTAGE LINKING CIRCUITRY; PROCESS SELECTOR SWITCH; ARC CONTROL; REMOTE AMPERAGE CONTROL (14 PIN, PANEL); REMOTE CONTACTOR CONTROL SELECTOR 14 PIN, ON) 14 PIN RECEPTACLE FOR OPTIONAL REMOTE CONTROLS
SUPPLEMENTARY FEATURES: (SUPP) 300 AMPS AT 32 VOLTS AT 60 DUTY CYCLE FOR THREE PHASE; 225 AMPS AT 29 VOLTS AT 60 DUTY CYCLE FOR SINGLE PHASE; HEIGHT 17 3/8 IN.; WIDTH 12 IN.; DEPTH 19 1/2 IN.; WEIGHT 77 POUNDS