Home · FSC 1650 Aircraft Hydraulic, Vacuum, And De-Icing System Components · NSN 1650-01-161-4828

NSN 1650-01-161-4828 — Piston And Slipper Assembly

NIIN 01-161-4828 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Buying rhythm

from 4 government buys since 2018

The government has bought this item about every 1.4 years (loose, gaps vary ±89%). Last buy Aug 25, 2026. The gaps are too uneven to put a window on the next one.

How well this works: for loose items, "next buy about one typical gap after the last, give or take 136 days" caught the actual next buy 37% of the time across 34,631 past buys, against 24% for a fixed "one year later" guess. A rhythm, not a schedule: DLA buys when stock and demand say so. Every item due for a buy now.

Used on: KC-135 Stratotanker · all platforms

NSN 1650-01-161-4828 is the national stock number for a piston and slipper assembly in federal supply class 1650 (Aircraft Hydraulic, Vacuum, And De-Icing System Components). It cross-references to 2 manufacturer part numbers from 1 CAGE code, including Hamilton Sundstrand Corporation; the primary is 731804. The federal catalog ties it to the KC-135 Stratotanker. The unit of issue is EA and the FLIS list price is $315.45.

The U.S. government has bought this item 17 times on record, 3 of them in the last 24 months, most recently on August 25, 2026 at $293.83 each from Hamilton Sundstrand Corporation. The median unit price paid over 36 months is $243.02. 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 1 CAGE

open solicitations, all agencies

government buys in 24 months · median $243.02

sellers with confirmed stock

Know someone who should see this?

Cross-references

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

Part number	CAGE	Manufacturer	Reference	Variation
731804GA	99167	Hamilton Sundstrand Corporation	3 · Design control (vendor)	2 · Fully interchangeable
731804	99167	Hamilton Sundstrand Corporation	D	9 · Reference only

Government demand

Nothing open right now. Last government buy Aug 25, 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
Aug 25, 2026	Hamilton Sundstrand Corporation 73030	163	$293.83		Dla	SPE4A626F297G
Aug 25, 2026	Hamilton Sundstrand Corporation 73030			$47,894	Dla	SPE4A125G0027
Mar 14, 2025	Hamilton Sundstrand Corporation 73030	10	$243.02		Dla	SPE4A525F6271
Jul 31, 2024	Hamilton Sundstrand Corporation 73030	27	$228.14		Dla	SPE4A524F065W
Jun 5, 2018	Hamilton Sundstrand Corporation 73030	41	$61.38		Dla	SPE4A518F772A
May 24, 2018	Hamilton Sundstrand Corporation 73030	67	$61.38		Dla	SPE4A518F708J
May 23, 2018	Hamilton Sundstrand Corporation 73030	67	$61.38		Dla	SPE4A518F702Q
May 22, 2018	Hamilton Sundstrand Corporation 73030	37	$61.38		Dla	SPE4A518F697K
May 20, 2018	Hamilton Sundstrand Corporation 73030	37	$61.38		Dla	SPE4A518F689D
May 18, 2018	Hamilton Sundstrand Corporation 73030	37	$61.38		Dla	SPE4A518F683L
May 17, 2018	Hamilton Sundstrand Corporation 73030	37	$61.38		Dla	SPE4A518F663R
May 16, 2018	Hamilton Sundstrand Corporation 73030	37	$61.38		Dla	SPE4A518F658Z
May 15, 2018	Hamilton Sundstrand Corporation 73030	37	$61.38		Dla	SPE4A518F653A
May 13, 2018	Hamilton Sundstrand Corporation 73030	6	$61.38		Dla	SPE4A518F646B
May 11, 2018	Hamilton Sundstrand Corporation 73030	6	$61.38		Dla	SPE4A518F637H
May 10, 2018	Hamilton Sundstrand Corporation 73030	6	$61.38		Dla	SPE4A518F632M
May 9, 2018	Hamilton Sundstrand Corporation 73030	6	$61.38		Dla	SPE4A518F626G

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 17 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 731804.

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

DLA management data

FLIS unit price: $315.45
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

End Item Identification: KC135R ACFT
General Characteristics Item Description: P/N 731805 PISTON 1;P/N 731955 SLIPPER 1;INSEPARABLE ASSEMBLY
Fsc Application Data: DRIVE,CONSTANT SPEED,HYDRAULIC,P/N 731114A

Related stock numbers

Other NSNs filed under the same part numbers.

00-852-2712 · Bearing,Ball,Annular

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.