Home · FSC 1630 Aircraft Wheel And Brake Systems · NSN 1630-00-939-8945
NSN 1630-00-939-8945 — Seat Assy,Brake Cyl
NIIN 00-939-8945 · unit of issue EA · AAC Z (insurance item) · source of supply SMS
Buying rhythm
from 15 government buys since 2017
The government has bought this item about every 3 months (irregular, gaps vary ±138%). Last buy Apr 21, 2026. The gaps are too uneven to put a window on the next one.
How well this works: for irregular items, "next buy about one typical gap after the last, give or take 151 days" caught the actual next buy 31% of the time across 21,161 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.
NSN 1630-00-939-8945 is the national stock number for a seat assy,brake cyl in federal supply class 1630 (Aircraft Wheel And Brake Systems). It cross-references to 1 manufacturer part number from 2 CAGE codes, including Tactair Fluid Controls Inc, Teledyne Hydra-Power Div Of Teledyne Inc; the primary is HP891142-1. The unit of issue is EA and the FLIS list price is $1,881.86.
The U.S. government has bought this item 15 times on record, 4 of them in the last 24 months, most recently on April 21, 2026 at $1,416.00 each from Tactair Fluid Controls Inc. The median unit price paid over 36 months is $1,349.00. 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.
1
part number from 2 CAGEs
0
open solicitations, all agencies
4
government buys in 24 months · median $1,349.00
0
sellers with confirmed stock
Cross-references
Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.
| Part number | CAGE | Manufacturer | Reference | Variation |
|---|---|---|---|---|
| HP891142-1 | 70236 | Tactair Fluid Controls Inc | 3 · Design control (vendor) | 2 · Fully interchangeable |
| HP891142-1 | 84685 | Teledyne Hydra-Power Div Of Teledyne Inc | 5 · Secondary reference | 9 · Reference only |
Government demand
Nothing open right now. Last government buy Apr 21, 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 |
|---|---|---|---|---|---|---|
| Apr 21, 2026 | Tactair Fluid Controls Inc 70236 | 4 | $1,416.00 | Dla | SPE4A626PM321 | |
| Dec 15, 2025 | Tactair Fluid Controls Inc 70236 | 10 | $1,416.00 | Dla | SPE4A726P4116 | |
| Jul 16, 2025 | Tactair Fluid Controls Inc 70236 | 10 | $1,349.00 | Dla | SPE4A725V4035 | |
| Jun 5, 2025 | Tactair Fluid Controls Inc 70236 | 8 | $1,349.00 | Dla | SPE4A625PV245 | |
| Sep 4, 2024 | Tactair Fluid Controls Inc 70236 | 8 | $1,349.00 | Dla | SPRPA124P2620 | |
| Apr 15, 2024 | Tactair Fluid Controls Inc 70236 | 43 | $1,285.00 | Dla | SPRPA124P1589 | |
| Sep 12, 2023 | Tactair Fluid Controls Inc 70236 | 18 | $1,285.00 | Dla | SPRPA123P0959 | |
| Jul 20, 2023 | Tactair Fluid Controls Inc 70236 | 1 | $1,285.00 | Dla | SPRPA123P0697 | |
| Jun 6, 2023 | Tactair Fluid Controls Inc 70236 | 50 | $1,285.00 | Dla | SPRPA123P0559 | |
| Oct 27, 2020 | Brown Helicopter, Inc. 5V361 | 4 | $881.00 | Dla | SPE4A721P0956 | |
| Aug 26, 2020 | Brown Helicopter, Inc. 5V361 | 2 | $884.00 | Dla | SPE4A620PN033 | |
| Oct 27, 2017 | Tactair Fluid Controls Inc 70236 | 6 | $890.00 | Dla | SPE4A418V0864 | |
| Sep 25, 2017 | Brown Helicopter, Inc. 5V361 | 1 | $872.00 | Dla | SPEFA517P1774 | |
| Aug 25, 2017 | Brown Helicopter, Inc. 5V361 | 1 | $872.00 | Dla | SPEFA517P1611 | |
| Jun 8, 2017 | Orbital Parts Inc 0EZH6 | 1 | $750.00 | Dla | SPE4A717PA883 |
Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 15 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 HP891142-1.
Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.
DLA management data
- FLIS unit price
- $1,881.86
- Unit of issue
- EA
- Acquisition advice
- Z — Insurance item
- Source of supply
- SMS
- Effective
- Oct 1, 2025
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.
Get the daily Market Pulse
New DLA RFQs, SAM.gov notices, yesterday's awards and FAA directives, weekday mornings. Free, one click to leave.