Home · FSC 6680 Liquid And Gas Flow, Liquid Level, And Mechanical Motion Measuring Instruments · NSN 6680-01-129-3692

NSN 6680-01-129-3692 — Tank Unit,Aft

NIIN 01-129-3692 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Used on: H-53 Sea Stallion and King Stallion · all platforms

NSN 6680-01-129-3692 is the national stock number for a tank unit,aft in federal supply class 6680 (Liquid And Gas Flow, Liquid Level, And Mechanical Motion Measuring Instruments). It cross-references to 2 manufacturer part numbers from 2 CAGE codes, including Sikorsky Aircraft Corporation, Simmonds Precision Products Inc; the primary is 391057-248. The federal catalog ties it to the H-53 Sea Stallion and King Stallion. The unit of issue is EA and the FLIS list price is $2,569.88.

The U.S. government has bought this item 12 times on record, 3 of them in the last 24 months, most recently on September 2, 2026 at $5,035.00 each from Simmonds Precision Products Inc. The median unit price paid over 36 months is $4,375.50. 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.

2

part numbers from 2 CAGEs

0

open solicitations, all agencies

3

government buys in 24 months · median $4,375.50

0

sellers with confirmed stock

Watch NSN 6680-01-129-3692: an email the morning the government solicits or buys it, or an AD names it. Free.
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Cross-references

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

Part numberCAGEManufacturerReferenceVariation
65317-08072-10278286Sikorsky Aircraft Corporation1 · Design control2 · Fully interchangeable
391057-24889305Simmonds Precision Products Inc3 · Design control (vendor)2 · Fully interchangeable

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

DateVendorQtyUnit costAmountBuyerReference
Sep 2, 2026Simmonds Precision Products Inc 8930526$5,035.00DlaSPE4A526F9113
Sep 2, 2026Simmonds Precision Products Inc 89305$130,910DlaSPE4A123G0011
Jul 23, 2025Simmonds Precision Products Inc 8930520$3,716.00DlaSPE4A525F050X
Jun 16, 2023Simmonds Precision Products Inc 8930511$1,842.21DlaSPE4A623F236N
Oct 8, 2021Hermes Technical International, Inc. 0MYY35$2,300.00DlaSPE4A022P0039
Nov 17, 2019Simmonds Precision Products Inc 893054$2,541.03DlaSPE4A520F4574
Oct 18, 2019Simmonds Precision Products Inc 893053$2,541.03DlaSPE4A520F1828
Sep 13, 2019Simmonds Precision Products Inc 8930514$2,151.21DlaSPE4A519F09S4
May 22, 2019Simmonds Precision Products Inc 893055$2,541.03DlaSPE4A519F758T
Feb 6, 2018Simmonds Precision Products Inc 8930523$2,036.00DlaSPE4A518F169B
Oct 17, 2017Simmonds Precision Products Inc 893059$2,405.00DlaSPE4A518F3140
Aug 8, 2017Simmonds Precision Products Inc 893059$2,405.00DlaSPE4AX15D94040342

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 12 buys 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 391057-248.

Request 391057-248

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

DLA management data

FLIS unit price
$2,569.88
Unit of issue
EA
Acquisition advice
Z — Insurance item
Source of supply
SMS
Effective
Oct 1, 2025

Item characteristics

End Item Identification
AIRCRAFT MODEL CH-53E

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.

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