Home · FSC 5331 O-Ring · NSN 5331-01-645-9434

NSN 5331-01-645-9434 — O-Ring

NIIN 01-645-9434 · unit of issue EA · AAC D (stocked, centrally managed (dla)) · source of supply SMS

Buying rhythm

from 17 government buys since 2017

The government has bought this item about every 5 months (loose, gaps vary ±90%). Last buy Aug 19, 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.

NSN 5331-01-645-9434 is the national stock number for an o-ring in federal supply class 5331 (O-Ring). It cross-references to 4 manufacturer part numbers from 3 CAGE codes, including Sae International, Society Of Automotive Engineers Inc, Naval Inventory Control Point Mechanicsburg; the primary is AS3581-010 OXYGEN CLEAN. The unit of issue is EA and the FLIS list price is $40.88.

The U.S. government has bought this item 19 times on record, 6 of them in the last 24 months, most recently on August 19, 2026 at $3.12 each from Dbr Industries, Inc.. The median unit price paid over 36 months is $29.86. 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.

4

part numbers from 3 CAGEs

0

open solicitations, all agencies

6

government buys in 24 months · median $29.86

0

sellers with confirmed stock

Watch NSN 5331-01-645-9434: an email the morning the government solicits or buys it, or an AD names it. Free.
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 numberCAGEManufacturerReferenceVariation
AS3581-010CP0U583Sae International3 · Design control (vendor)1 · Not fully interchangeable
SAE-AS35810U583Sae International3 · Design control (vendor)1 · Not fully interchangeable
AS3581-010 OXYGEN CLEAN81343Society Of Automotive Engineers Inc5 · Secondary reference9 · Reference only
AS3581-010 OXYGEN CLEAN0U583Sae International5 · Secondary reference9 · Reference only
AS3581-010 OXYGEN CLEAN CP03950Naval Inventory Control Point Mechanicsburg5 · Secondary reference2 · Fully interchangeable

Government demand

Nothing open right now. Last government buy Aug 19, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

DateVendorQtyUnit costAmountBuyerReference
Aug 19, 2026Dbr Industries, Inc. 1K697511$3.12DlaSPE7M126P9770
Aug 19, 2026Dbr Industries, Inc. 1K697$1,595DlaSPE7M126P9770
Mar 12, 2026Noble Supply & Logistics, LLC 1HEN9216$3.13DlaSPE4A526FAHDM
Jun 5, 2025Noble Supply & Logistics, LLC 1HEN9344$29.86DlaSPE4A525FARRS
Apr 24, 2025Noble Supply & Logistics, LLC 1HEN9246$29.86DlaSPE4A525FABHW
Feb 6, 2025Noble Supply & Logistics, LLC 1HEN9314$29.86DlaSPE4A525FA5DA
Aug 3, 2023Noble Supply & Logistics, LLC 1HEN9819$29.51DlaSPE4A623FBN2Y
Nov 22, 2022Dbr Industries, Inc. 1K697710$2.61DlaSPE7L123V1047
Sep 16, 2022Dbr Industries, Inc. 1K697576$2.61DlaSPE7L122V022N
May 27, 2022Fitzhugh Clifton 0KKV2265$3.26DlaSPE7L122V7483
Apr 26, 2022Dbr Industries, Inc. 1K697303$2.61DlaSPE7L122V6664
Mar 25, 2022Dbr Industries, Inc. 1K697133$2.61DlaSPE7L122P4268
Mar 29, 2021Fitzhugh Clifton 0KKV2104$2.75DlaSPE7L121V3918
May 14, 2020Fitzhugh Clifton 0KKV250$6.95DlaSPE7L720V0806
Apr 27, 2020Fitzhugh Clifton 0KKV25$24.00DlaSPE5E820V5083
Oct 29, 2019Fitzhugh Clifton 0KKV28$24.00DlaSPE5E820V0869
Sep 23, 2019Fitzhugh Clifton 0KKV211$24.00DlaSPE5E819V9660
Oct 11, 2017Fitzhugh Clifton 0KKV21$150.00DlaSPE5E818V0322
Apr 26, 2017Fitzhugh Clifton 0KKV220$10.00DlaSPE5E817V5436

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 19 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 AS3581-010 OXYGEN CLEAN.

Request AS3581-010 OXYGEN CLEAN

No account needed. Goes to the sellers who carry this number or its family.

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

DLA management data

FLIS unit price
$40.88
Unit of issue
EA
Acquisition advice
D — Stocked, centrally managed (DLA)
Source of supply
SMS
Effective
Oct 1, 2025

Item characteristics

Cross-Sectional Height
INCHES NOMINAL 0.070
Center Hole Diameter
INCHES NOMINAL 0.239
End Item Identification
VALVE AUTO SHUT OFF
Criticality Code Justification
FEAT
Special Features
CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
Material
RUBBER FLUOROSILICONE CLASS FQ

Related stock numbers

Other NSNs filed under the same part numbers.

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.