Home · NSN 01-559-2652

NSN 01-559-2652 — Adapter,Straight,Tube To Boss

NIIN 01-559-2652 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 01-559-2652 is the national stock number for an adapter,straight,tube to boss. It cross-references to 4 manufacturer part numbers from 3 CAGE codes, including Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M, Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M, Fitting Source, Inc; the primary is MIL-DTL-18866. The unit of issue is EA and the FLIS list price is $2.86.

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 3 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
MS51520B3Z	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	2 · Item ident. reference	2 · Fully interchangeable
MIL-DTL-18866	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	4	1 · Not fully interchangeable
MIL-F-18866	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	1 · Not fully interchangeable
MS51520	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
MS51520B3Z	0HZT9	Fitting Source, Inc	5 · Secondary reference	1 · Not fully interchangeable

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 MIL-DTL-18866.

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

DLA management data

FLIS unit price: $2.86
Unit of issue: EA
Acquisition advice: J — Not stocked, central procurement
Source of supply: SMS
Effective: Oct 1, 2026

Item characteristics

Thread Class: 2A
Connection Type: FIRST END THREADED EXTERNAL TUBE
Connection Type: SECOND END THREADED EXTERNAL BOSS
Nominal Thread Size: ALL ENDS INCHES 0.375
Nominal Thread Size: CENTER BULKHEAD INCHES 0.375
Seat Angle: FIRST END DEGREES 37.0
Seat Angle: SECOND END DEGREES 37.0
Nominal Outside Diameter Tube Accommodated: FIRST END INCHES 0.188
Nominal Overall Length: INCHES 1.900
Part Name Assigned By Controlling Agency: BULK HEAD UNION TUBING
Special Features: CONNECTION STYLE ON 1ST END IS B64 AND 2ND END IS B81
Material: OVERALL STEEL
Surface Treatment: OVERALL ZINC
Thread Series Designator: ALL ENDS UNF
Thread Series Designator: CENTER BULKHEAD UNF

Related stock numbers

Other NSNs filed under the same part numbers.

00-003-5919 · Adapter,Straight,Pipe To Tube
00-004-0737 · Elbow,Tube To Boss
00-004-4265 · Sleeve,Clinch,Tube Fitting
00-004-8101 · Nipple,Tube
00-006-6181 · Tee,Pipe To Tube
00-006-9549 · Adapter,Straight,Tube To Boss
00-007-1158 · Plug,Tube Fitting,Threaded
00-007-4580 · Elbow,Pipe To Tube

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.