Home · FSC 4820 Valves, Nonpowered · NSN 4820-01-517-4883

NSN 4820-01-517-4883 — Retainer,Disk,Valve

NIIN 01-517-4883 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Buying rhythm

from 6 government buys since 2017

The government has bought this item about every 3 months (regular, gaps vary ±42%). Last buy Sep 25, 2018. If the rhythm holds, the next one falls between Nov 4, 2018 and Feb 2, 2019: a buy is overdue by the usual rhythm. 1 solicitation is open right now.

How well this works: for regular items, "next buy about one typical gap after the last, give or take 121 days" caught the actual next buy 42% of the time across 15,552 past buys, against 22% 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 4820-01-517-4883 is the national stock number for a retainer,disk,valve in federal supply class 4820 (Valves, Nonpowered). It cross-references to 1 manufacturer part number from 1 CAGE code, including Northrop Grumman Systems Corporation; the primary is 6D60814-001. The unit of issue is EA and the FLIS list price is $11,997.00.

The U.S. government has bought this item 7 times on record, most recently on September 25, 2018 at $7,624.00 each from Northrop Grumman Systems Corporation. 2 solicitations are open right now, the soonest due September 30, 2026 for 19 EA. 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

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
6D60814-001	90099	Northrop Grumman Systems Corporation	3 · Design control (vendor)	2 · Fully interchangeable

Government demand

Open DLA RFQs (DIBBS)

SPE4A626T35UJ · 19 EA · due Sep 30, 2026 · N · AMSC R · DIBBS

Open notices, other agencies (SAM.gov)

Defense Logistics Agency · Dla Aviation · RETAINER,DISK,VALVE · due Sep 30, 2026 · Combined Synopsis/Solicitation

What the government paid

Date	Vendor	Qty	Unit cost	Buyer	Reference
Sep 25, 2018	Northrop Grumman Systems Corporation 90099	4	$7,624.00	Dla	SPE7MC18F0399
Jun 14, 2018	Northrop Grumman Systems Corporation 90099	5	$7,421.00	Dla	SPE7MC18F0343
Feb 13, 2018	Northrop Grumman Systems Corporation 90099	4	$11,261.00	Dla	SPE7MC18F0178
Oct 20, 2017	Northrop Grumman Systems Corporation 90099	1	$8,869.00	Dla	SPE7M018F0005
Sep 19, 2017	Northrop Grumman Systems Corporation 90099	2	$10,756.00	Dla	SPE4A117G00030082
Jul 25, 2017	C & D Equipment Company, Inc. 0E7M8	1	$11,000.00	Dla	SPE7M017P4534
Mar 26, 2004	Port Electric Supply Corp. Dba Port Electric Supply Corp 4M158	3	$6,888.00	Dla	SP076004V8317

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 7 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 6D60814-001.

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

DLA management data

FLIS unit price: $11,997.00
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Jun 1, 2026

Item characteristics

End Item Identification: PORT AND STBD AHEAD VALVE ASSEMBLIES FOR NUCLEAR REACTOR BOUNDRY AREA
Part Name Assigned By Controlling Agency: RETAINER,DISK,VALVE

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.