Home · FSC 3110 Bearings, Antifriction, Unmounted · NSN 3110-01-212-0173
NSN 3110-01-212-0173 — Bearing,Ball,Annular
NIIN 01-212-0173 · unit of issue EA · AAC Z (insurance item) · source of supply SMS
Buying rhythm
from 8 government buys since 2016
The government has bought this item about every 12 months (loose, gaps vary ±78%). Last buy Jul 20, 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 35,590 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 3110-01-212-0173 is the national stock number for a bearing,ball,annular in federal supply class 3110 (Bearings, Antifriction, Unmounted). It cross-references to 4 manufacturer part numbers from 5 CAGE codes, including Timken Co, Skf Usa Inc., Mpb Corporation; the primary is 1903-SZZ-1. The unit of issue is EA and the FLIS list price is $1,308.52.
The U.S. government has bought this item 10 times on record, 3 of them in the last 24 months, most recently on July 20, 2026 at $1,176.10 each from Timken Co. The median unit price paid over 36 months is $1,176.10. 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 5 CAGEs
0
open solicitations, all agencies
3
government buys in 24 months · median $1,176.10
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 |
|---|---|---|---|---|
| HKTZZ003-W71 | 21335 | Timken Co | 3 · Design control (vendor) | 2 · Fully interchangeable |
| 1903-SZZ-1 | 38443 | Skf Usa Inc. | 5 · Secondary reference | 1 · Not fully interchangeable |
| HKTZZ003-W71 | 78118 | Mpb Corporation | 5 · Secondary reference | 9 · Reference only |
| NF203518-1 | 78567 | Speco Corp | 5 · Secondary reference | 9 · Reference only |
| R-1903DDRDA3LG | 83086 | New Hampshire Ball Bearings Inc | 5 · Secondary reference | 9 · Reference only |
Government demand
Nothing open right now. Last government buy Jul 20, 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 |
|---|---|---|---|---|---|---|
| Jul 20, 2026 | Timken Co 21335 | 60 | $1,176.10 | Dla | SPE4A626PY507 | |
| Jun 4, 2026 | Timken Co 21335 | 64 | $1,176.10 | Dla | SPE4A626PS913 | |
| Jun 6, 2025 | Timken Co 21335 | 8 | $1,130.83 | Dla | SPE4A625V323Z | |
| Mar 23, 2023 | Timken Co 21335 | 18 | $895.56 | Dla | SPE4A723P8098 | |
| Sep 9, 2021 | Timken Co 21335 | 10 | $797.33 | Dla | SPE4A621V756Z | |
| Dec 31, 2020 | Timken Co 21335 | 35 | $694.20 | Dla | SPE4A621P8014 | |
| May 13, 2020 | Timken Co 21335 | 54 | $694.20 | Dla | SPE4A520P5839 | |
| Oct 27, 2016 | Timken Co 21335 | 28 | $617.14 | Dla | SPE4A617P1322 | |
| Oct 14, 2016 | Timken Co 21335 | 28 | $617.14 | Dla | SPE4A617P0966 | |
| Dec 21, 2015 | Mpb Corporation 78118 | 28 | $593.40 | Dla | SPE4A614D68230008 |
Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 10 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 1903-SZZ-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
- $1,308.52
- Unit of issue
- EA
- Acquisition advice
- Z — Insurance item
- Source of supply
- SMS
- Effective
- Oct 1, 2025
Item characteristics
- Overall Width
- INCHES NOMINAL 0.2756
- Bore Diameter
- INCHES NOMINAL 0.6693
- Overall Outside Diameter
- INCHES NOMINAL 1.1811
- Surface Finish
- GROUND
- Retainer Fabrication Method
- PRESSED
- Bearing Seal Type
- CONTACT
- Alignment Type
- RIGID
- Load Direction
- RADIAL
- Bore Shape
- STRAIGHT
- Internal Fit-Up Designation
- STANDARD
- Standard Tolerance Designation
- AFBMA CLASS 3
- Special Features
- LUBE FILL 20 PCT MAX
- Lubrication Material
- GREASE
- Lubrication Material Document And Classification
- MIL SPEC SINGLE MATERIAL RESPONSE -IL-G-21164
- Material
- INNER RING STEEL COMP E52100
- Material
- RETAINER STEEL COMP 1010
- Material
- OUTER RING STEEL COMP E52100
- Material
- BALL STEEL COMP E52100
- Material
- SEAL RUBBER SYNTHETIC
- Material Document And Classification
- BALL ASSN STD SINGLE MATERIAL RESPONSE AISI OR ASSN STD SINGLE MATERIAL RESPONSE SAE
- Material Document And Classification
- INNER RING ASSN STD SINGLE MATERIAL RESPONSE AISI OR ASSN STD SINGLE MATERIAL RESPONSE SAE
- Material Document And Classification
- RETAINER ASSN STD SINGLE MATERIAL RESPONSE AISI OR ASSN STD SINGLE MATERIAL RESPONSE SAE
- Material Document And Classification
- OUTER RING ASSN STD SINGLE MATERIAL RESPONSE AISI OR ASSN STD SINGLE MATERIAL RESPONSE SAE
- Surface Treatment
- OUTER RING CADMIUM
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.
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