Home · FSC 4730 Hose, Pipe, Tube, Lubrication, And Railing Fittings · NSN 4730-01-057-6112

NSN 4730-01-057-6112 — Reducer,Boss

NIIN 01-057-6112 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 4730-01-057-6112 is the national stock number for a reducer,boss in federal supply class 4730 (Hose, Pipe, Tube, Lubrication, And Railing Fittings). It cross-references to 3 manufacturer part numbers from 2 CAGE codes, including Sae International, Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M; the primary is MS21916-3-2R. The unit of issue is EA and the FLIS list price is $49.96.

The U.S. government has bought this item 1 time on record, 1 of them in the last 24 months, most recently on September 2, 2026 for $1,086 from Lockheed Martin Corporation. No seller has confirmed stock of it here in the last 30 days; watching the number is free and the first listing triggers an alert.

part numbers from 2 CAGEs

open solicitations, all agencies

government buy in 24 months

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
MS21916-3-2R	0U583	Sae International	3 · Design control (vendor)	2 · Fully interchangeable
SAE-AS18280	0U583	Sae International	3 · Design control (vendor)	1 · Not fully interchangeable
MS21916-3-2R	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
MS21916-3-2S	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only

Government demand

Nothing open right now. Last government buy Sep 2, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

Date	Vendor	Qty	Unit cost	Amount	Buyer	Reference
Sep 2, 2026	Lockheed Martin Corporation 16331			$1,086	Dla	SPE4AX25D5000

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 1 buy on record in total.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on MS21916-3-2R.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $49.96
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2026

Item characteristics

Thread Class: 3A
Reducer Type: CONCENTRIC
Maximum Operating Temp: SINGLE RESPONSE FAHRENHEIT 250.0
Connection Type: ALL ENDS THREADED EXTERNAL BOSS
Nominal Thread Size: SECOND END INCHES 0.312
Nominal Thread Size: FIRST END INCHES 0.375
Operating Pressure: SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 3000.0
Nominal Overall Length: INCHES 1.047
Material: OVERALL STEEL COMP 304L OR STEEL COMP 347
Material Document And Classification: OVERALL FED STD 1ST MATERIAL RESPONSE 66,AISI 304L TO SAE 30304L OR FED STD 2ND MATERIAL RESPONSE 66,AISI 347 TO SAE 30347
Media For Which Designed: SINGLE RESPONSE HYDRAULIC FLUID
Thread Series Designator: ALL ENDS UNIFIED NATIONAL JOINT FINE (UNJF)
Specification/Standard Data: GOVERNMENT STANDARD 96906--S21916

Related stock numbers

Other NSNs filed under the same part numbers.

00-004-6542 · Elbow,Tube
00-009-8259 · Union,Tube
00-012-2310 · Nipple,Boss
00-027-5762 · Tee,Tube To Boss
00-033-4981 · Adapter,Straight,Tube To Boss
00-034-1411 · Nut,Tube Coupling
00-050-6850 · Tee,Tube To Boss
00-051-1479 · Tee,Tube To Boss

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.