Home · NSN 01-049-1871

NSN 01-049-1871 — Spacer,Sleeve

NIIN 01-049-1871 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 01-049-1871 is the national stock number for a spacer,sleeve. It cross-references to 4 manufacturer part numbers from 4 CAGE codes, including Sps Technologies LLC, The Boeing Company, Atlas Corp Western Sky Industries Div; the primary is 4M72-4-25. The unit of issue is EA and the FLIS list price is $9.82.

No government purchase of this stock number is on our record yet. 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 4 CAGEs

open solicitations, all agencies

government buys 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
SL2609-4-25	97393	Sps Technologies LLC	3 · Design control (vendor)	2 · Fully interchangeable
4M72-4-25	76301	The Boeing Company	5 · Secondary reference	2 · Fully interchangeable
BACS18G25B	81205	The Boeing Company	5 · Secondary reference	2 · Fully interchangeable
WSI-11-25	04169	Atlas Corp Western Sky Industries Div	5 · Secondary reference	9 · Reference only

Government demand

Nothing open right now. Watch this NSN and we will email you when it is solicited.

What the government paid

No government purchase on record for this NSN.

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices.

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 4M72-4-25.

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

DLA management data

FLIS unit price: $9.82
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Overall Length: INCHES MINIMUM 0.2450 AND INCHES MAXIMUM 0.2550
Body Outside Diameter: INCHES MINIMUM 0.3700 AND INCHES MAXIMUM 0.3800
Body Inside Diameter: INCHES MINIMUM 0.2550 AND INCHES MAXIMUM 0.2650
Flange Outside Diameter: INCHES MINIMUM 1.2710 AND INCHES MAXIMUM 1.2910
Flange Width: INCHES MINIMUM 0.0810 AND INCHES MAXIMUM 0.1010
Corner Shape: ALL CORNERS SQUARE
Part Name Assigned By Controlling Agency: (INAVY) SPACER - FLANGED TUBULAR - ALUMINUM
Material: OVERALL ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 2024
Material Document And Classification: OVERALL FED SPEC 1ST MATERIAL RESPONSE WW-T-700 TO 6,T6 OR FED SPEC 2ND MATERIAL RESPONSE QQ-S-250 TO 5,T3 OR T4
Proprietary Characteristics: PACS
Surface Treatment: OVERALL CHROMATE
Surface Treatment Document And Classification: OVERALL MIL SPEC SINGLE TREATMENT RESPONSE -IL-C-5541

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.