Home · FSC 3120 Bearings, Plain, Unmounted · NSN 3120-01-203-4442

NSN 3120-01-203-4442 — Bearing,Plain,Rod End

NIIN 01-203-4442 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 3120-01-203-4442 is the national stock number for a bearing,plain,rod end in federal supply class 3120 (Bearings, Plain, Unmounted). It cross-references to 9 manufacturer part numbers from 10 CAGE codes, including The Boeing Company, Timken Aurora Bearing Company, Rbc Specline Inc; the primary is 51589L-041VL. The unit of issue is EA and the FLIS list price is $254.60.

The U.S. government has bought this item 1 time on record, 1 of them in the last 24 months, most recently on September 3, 2026 for $23,883 from Mechatronics, Inc. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part numbers from 10 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
BACB10Z4LT	81205	The Boeing Company	1 · Design control	2 · Fully interchangeable
BACB10Z4LT	56644	Timken Aurora Bearing Company	3 · Design control (vendor)	2 · Fully interchangeable
BACB10Z4LT	16746	Rbc Specline Inc	3 · Design control (vendor)	2 · Fully interchangeable
BACB10Z4LT	73134	Roller Bearing Company Of America, Inc.	3 · Design control (vendor)	2 · Fully interchangeable
BACB10Z4LT	81376	Rbc Southwest Products, Inc.	3 · Design control (vendor)	2 · Fully interchangeable
BACB10Z4LT	97613	Sargent Aerospace & Defense, LLC	3 · Design control (vendor)	2 · Fully interchangeable
BACB10Z4LT	02758	U S Bearings	3 · Design control (vendor)	2 · Fully interchangeable
BACB10Z4LT	09455	Rbc Transport Dynamics Corp	3 · Design control (vendor)	2 · Fully interchangeable
BACB10Z4LT	15860	New Hampshire Ball Bearings Inc	3 · Design control (vendor)	2 · Fully interchangeable
51589L-041VL	09455	Rbc Transport Dynamics Corp	5 · Secondary reference	1 · Not fully interchangeable
ARBL4-61TW	15860	New Hampshire Ball Bearings Inc	5 · Secondary reference	1 · Not fully interchangeable
ARL4-8W-3	50294	New Hampshire Ball Bearings Inc	5 · Secondary reference	1 · Not fully interchangeable
BACB10Z4LT	50294	New Hampshire Ball Bearings Inc	5 · Secondary reference	1 · Not fully interchangeable
BRELHS-4-2242-EL-1	81376	Rbc Southwest Products, Inc.	5 · Secondary reference	1 · Not fully interchangeable
FSSKL-4AS-2	73134	Roller Bearing Company Of America, Inc.	5 · Secondary reference	1 · Not fully interchangeable
HB4-201KLT	02758	U S Bearings	5 · Secondary reference	1 · Not fully interchangeable
KBL-150WT	97613	Sargent Aerospace & Defense, LLC	5 · Secondary reference	9 · Reference only
KBL4-150WT	97613	Sargent Aerospace & Defense, LLC	5 · Secondary reference	1 · Not fully interchangeable

Government demand

Nothing open right now. Last government buy Sep 3, 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 3, 2026	Mechatronics, Inc 5V122			$23,883	Dla	SPE4A626PAX33 » Award/Basic Package View

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 51589L-041VL.

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

DLA management data

FLIS unit price: $254.60
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2026

Item characteristics

Thread Class: 3B
Thread Direction: LEFT-HAND
Overall Length: INCHES NOMINAL 1.8720
Bore Diameter: INCHES MINIMUM 0.2495 AND INCHES MAXIMUM 0.2500
Outer Member Outside Diameter: INCHES NOMINAL 0.8060
Bore Center To Shank End Distance: INCHES NOMINAL 1.4690
Outer Member Width: INCHES MINIMUM 0.3320 AND INCHES MAXIMUM 0.3420
Inner Member Width: INCHES MINIMUM 0.4320 AND INCHES MAXIMUM 0.4370
Shank Thread Length: INCHES MINIMUM 0.7500
Inspection Hole Center To End Distance: INCHES NOMINAL 0.3750
Shank Width Across Wrench Flats: INCHES MINIMUM 0.4270 AND INCHES MAXIMUM 0.4390
Static Radial Load Rating: POUNDS 4675
Thread Diameter: INCHES NOMINAL 0.3125
Thread Quantity Per Inch: 24
Hardness Rating: RACE INSERT ROCKWELL C MINIMUM 35.0 AND ROCKWELL C MAXIMUM 44.0
Hardness Rating: ROD END BODY ROCKWELL C MINIMUM 28.0 AND ROCKWELL C MAXIMUM 37.0
Hardness Rating: INNER MEMBER ROCKWELL C MINIMUM 55.0 AND ROCKWELL C MAXIMUM 61.0
Lubrication Feature: RACE INSERT GROOVE AND PERFORATION
Lubrication Feature: INNER MEMBER GROOVE AND PERFORATION
Special Features: DRY FILM LUBRICANT PER BAC 5814,FSCM 81205 TO THE BALL OD; LUBRICATION HOLES AND GROOVES OPTIONAL; 4 KEYWAYS IN SHANK END PER NAS559; PASSIVATE EXPOSED SURFACES ONLY
Material: INNER MEMBER STEEL COMP 440C
Material: RACE INSERT STEEL COMP XM-12
Material: LUBRICATION LUBRICANT DRY FILM
Material: ROD END BODY STEEL COMP XM-12

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.