Home · NSN 00-910-4331

NSN 00-910-4331 — Nut,Tube Coupling

NIIN 00-910-4331 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 00-910-4331 is the national stock number for a nut,tube coupling. It cross-references to 4 manufacturer part numbers from 3 CAGE codes, including Society Of Automotive Engineers Inc, Sae International, Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M; the primary is MS21921-3 AND MS21922-3. The unit of issue is EA and the FLIS list price is $104.63.

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
MS21921-3 AND MS21922-3	81343	Society Of Automotive Engineers Inc	3 · Design control (vendor)	9 · Reference only
MS21921V3PANDMS21922-3	0U583	Sae International	3 · Design control (vendor)	2 · Fully interchangeable
SAE-AS18280	0U583	Sae International	3 · Design control (vendor)	1 · Not fully interchangeable
MS21921-3 AND MS21922-3	0U583	Sae International	5 · Secondary reference	9 · Reference only
MS21921-3ANDMS21922-3	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. 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 MS21921-3 AND MS21922-3.

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

DLA management data

FLIS unit price: $104.63
Unit of issue: EA
Acquisition advice: J — Not stocked, central procurement
Source of supply: SMS
Effective: Jul 7, 2026

Item characteristics

Thread Class: 3B
Thread Direction: RIGHT-HAND
Fabrication Method: MACHINED
Nut Height: INCHES NOMINAL 0.580
Width Across Flats: INCHES NOMINAL 0.438
Length To Shoulder: INCHES NOMINAL 0.429
Smallest Inside Diameter: INCHES NOMINAL 0.232
Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
Thread Quantity Per Inch: 24
Nominal Thread Size: INCHES 0.375
Nominal Tube Outside Diameter: INCHES 0.188
Seat Angle: DEGREES NOMINAL 45.00
Special Features: FURNSIEHD WITH MS21922-3 SLEEVE
Material: OVERALL STEEL
Material Document And Classification: OVERALL FED SPEC SINGLE MATERIAL RESPONSE QQ-S-637
Surface Treatment: OVERALL CADMIUM
Surface Treatment Document And Classification: OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TYE 2,CLASS 2
Specification/Standard Data: GOVERNMENT STANDARD 96906--S21921 AND -S21922

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.