Home · FSC 2840 Gas Turbines And Jet Engines, Aircraft, Prime Moving; And Components · NSN 2840-01-685-8939

NSN 2840-01-685-8939 — Stiffener,Heatshield,Aircraft Ga

NIIN 01-685-8939 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Buying rhythm

from 7 government buys since 2021

The government has bought this item about every 7 months (loose, gaps vary ±85%). Last buy Aug 11, 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: H-53 Sea Stallion and King Stallion · all platforms

NSN 2840-01-685-8939 is the national stock number for a stiffener,heatshield,aircraft ga in federal supply class 2840 (Gas Turbines And Jet Engines, Aircraft, Prime Moving; And Components). It cross-references to 1 manufacturer part number from 1 CAGE code, including Sikorsky Aircraft Corporation; the primary is 65312-12015-042. 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 $9,990.56.

The U.S. government has bought this item 8 times on record, 4 of them in the last 24 months, most recently on August 11, 2026 at $13,099.32 each from Sikorsky Aircraft Corporation. The median unit price paid over 36 months is $7,170.67. 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 number from 1 CAGE

open solicitations, all agencies

government buys in 24 months · median $7,170.67

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
65312-12015-042	78286	Sikorsky Aircraft Corporation	3 · Design control (vendor)	2 · Fully interchangeable

Government demand

Nothing open right now. Last government buy Aug 11, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

Date	Vendor	Qty	Unit cost	Buyer	Reference
Aug 11, 2026	Sikorsky Aircraft Corporation 78286	1	$13,099.32	Dla	SPE4A526F8502
May 15, 2025	Sikorsky Aircraft Corporation 78286	2	$10,414.69	Dla	SPE4A625F083D
Dec 30, 2024	Sikorsky Aircraft Corporation 78286	1	$7,159.59	Dla	SPE4A625F5165
Oct 29, 2024	Sikorsky Aircraft Corporation 78286	3	$7,181.74	Dla	SPE4A525F1278
Jun 9, 2024	Sikorsky Aircraft Corporation 78286	1	$7,132.65	Dla	SPE4A624F180Q
Jun 4, 2024	Sikorsky Aircraft Corporation 78286	1	$7,132.65	Dla	SPE4A524F029L
Aug 31, 2023	Sikorsky Aircraft Corporation 78286	6	$5,330.02	Dla	SPE4A623F410N
Apr 13, 2021	Sikorsky Aircraft Corporation 78286	2	$6,024.44	Dla	SPE4A621F049E

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 8 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 65312-12015-042.

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

DLA management data

FLIS unit price: $9,990.56
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Overall Length: INCHES NOMINAL 8.00
End Item Identification: CH-53A/D/E
Part Name Assigned By Controlling Agency: DIAPHRAM ASSEMBLY, ENGINE FIREWALL
Proprietary Characteristics: PACS

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.