The Piston and Follower Assembly, cataloged under National Stock Number 4320-00-177-3125, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Euramco Safety Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-177-3125 |
| Primary Part Number | 451242010-40ASSY |
| Item Name | Piston and Follower Assembly |
| FSC / FSG | 4320 / 43 — No Item Name Available |
| Manufacturer | Euramco Safety Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF 1 EA STEAM PISTON HEAD; 1 EA BULL RING; 1 EA PISTON FOLLOWER; 2 EA PISTON RING; 6 EA STUD; 6 EA HEX NUT; 6 EA COTTER PIN; STEEL O/A; 9 IN. OD; 4.500 IN. H; 2.125 IN. ID IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| BS7-2082 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 451242010-40ASSY PRIMARY | Euramco Safety Inc (USA) |
| BS5-1705PC12T019 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| BS5-2078PC40T046 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 3167539PC40T046 PRIMARY | Naval Ship Systems Command (USA) |
| BS5-1774PC12T019 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| BS7-2082PC40T046 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| BS5-1701-12T19 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| XK1 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 4320-00-177-3125 is a Piston and Follower Assembly, manufactured by Euramco Safety Inc, classified under FSC 4320 (No Item Name Available). Status: active.
NSN 4320-00-177-3125 has 9 cross-referenced part numbers: BS7-2082 (Circor Naval Solutions Llc Dba Warren Pumps), 451242010-40ASSY (Euramco Safety Inc), BS5-1705PC12T019 (Circor Naval Solutions Llc Dba Warren Pumps), BS5-2078PC40T046 (Circor Naval Solutions Llc Dba Warren Pumps), 3167539PC40T046 (Naval Ship Systems Command) and 4 more.
There are 7 known substitutes for 4320-00-177-3125: 5340-00-168-0960, 4320-00-218-4183, 4310-00-218-4184 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 451242010-40ASSY: End Item Identification: WARREN 9X6X16 VERTICAL SINGLE PUMP; General Characteristics Item Description: CONSISTS OF 1 EA STEAM PISTON HEAD; 1 EA BULL RING; 1 EA PISTON FOLLOWER; 2 EA PISTON RING; 6 EA STUD; 6 EA HEX NUT; 6 EA COTTER PIN; STEEL O/A; 9 IN. OD; 4.500 IN. H; 2.125 IN. ID IN. 2 total characteristics are documented in the Federal Logistics Information System.