Home · FSC 6540 Ophthalmic Instruments, Equipment, And Supplies · NSN 6540-01-375-9031
NSN 6540-01-375-9031 — Stereoscope,Vision Testing
NIIN 01-375-9031 · unit of issue EA · AAC L (not stocked, local purchase) · source of supply SMS
Buying rhythm
from 18 government buys since 2022
The government has bought this item about every 2 months (loose, gaps vary ±68%). Last buy Jul 30, 2026. The gaps are too uneven to put a window on the next one. 1 solicitation is open right now.
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 6540-01-375-9031 is the national stock number for a stereoscope,vision testing in federal supply class 6540 (Ophthalmic Instruments, Equipment, And Supplies). It cross-references to 3 manufacturer part numbers from 2 CAGE codes, including Stereo Optical Company, Inc, Boc Ophthalmic Instruments Pty Ltdatf Boc Ophthalmic Instrumentsunit Trust; the primary is AFVT 2300. The unit of issue is EA and the FLIS list price is $5,739.76.
The U.S. government has bought this item 20 times on record, 8 of them in the last 24 months, most recently on July 30, 2026 at $4,311.00 each from Stereo Optical Company, Inc. The median unit price paid over 36 months is $4,075.00. 1 solicitation is open right now, the soonest due September 30, 2026 for 1 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.
3
part numbers from 2 CAGEs
1
open solicitation, all agencies
8
government buys in 24 months · median $4,075.00
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 |
|---|---|---|---|---|
| AFVT 2300 | 02012 | Stereo Optical Company, Inc | 3 · Design control (vendor) | 2 · Fully interchangeable |
| AFVT 2300 | Z8G34 | Boc Ophthalmic Instruments Pty Ltdatf Boc Ophthalmic Instrumentsunit Trust | 5 · Secondary reference | 2 · Fully interchangeable |
| OPTEC 2000 W/MOD | 02012 | Stereo Optical Company, Inc | 5 · Secondary reference | 9 · Reference only |
| OPTEC 2300 | Z8G34 | Boc Ophthalmic Instruments Pty Ltdatf Boc Ophthalmic Instrumentsunit Trust | 5 · Secondary reference | 2 · Fully interchangeable |
Government demand
Open DLA RFQs (DIBBS)
- SPE2DS26T470V · 1 EA · due Sep 30, 2026 · N · AMSC Z · DIBBS
What the government paid
| Date | Vendor | Qty | Unit cost | Amount | Buyer | Reference |
|---|---|---|---|---|---|---|
| Jul 30, 2026 | Stereo Optical Company, Inc 02012 | 1 | $4,311.00 | Dla | SPE2DS26V8262 | |
| Jul 8, 2026 | Stereo Optical Company, Inc 02012 | 2 | $4,311.00 | Dla | SPE2DS26P2384 | |
| Jun 4, 2026 | Stereo Optical Company, Inc 02012 | 1 | $4,316.00 | Dla | SPE2DS26V6339 | |
| Feb 23, 2026 | Stereo Optical Company, Inc 02012 | 1 | $4,075.00 | Dla | SPE2DS26V3133 | |
| Sep 26, 2025 | Stereo Optical Company, Inc 02012 | 1 | $4,075.00 | Dla | SPE2DS25V263Z | |
| Aug 5, 2025 | Stereo Optical Company, Inc 02012 | 1 | $4,075.00 | Dla | SPE2DS25V148D | |
| Jul 2, 2025 | Stereo Optical Company, Inc 02012 | 2 | $4,075.00 | Dla | SPE2DS25V074K | |
| Nov 15, 2024 | Stereo Optical Company, Inc 02012 | 1 | $3,953.00 | Dla | SPE2DS25V1762 | |
| Sep 9, 2024 | Stereo Optical Company, Inc 02012 | 1 | $3,953.00 | Dla | SPE2DS24V084A | |
| May 16, 2024 | Stereo Optical Company, Inc 02012 | 1 | $3,953.00 | Dla | SPE2DS24V6978 | |
| Dec 11, 2023 | Stereo Optical Company, Inc 02012 | 1 | $3,733.00 | Dla | SPE2DS24V1604 | |
| Oct 12, 2023 | Stereo Optical Company, Inc 02012 | 1 | $3,733.00 | Dla | SPE2DS24V0355 | |
| Oct 5, 2023 | Stereo Optical Company, Inc 02012 | 1 | $3,733.00 | Dla | SPE2DS24V0197 | |
| Aug 31, 2023 | Stereo Optical Company, Inc 02012 | 2 | $3,733.00 | Dla | SPE2DS23V035E | |
| Aug 8, 2023 | Stereo Optical Company, Inc 02012 | 1 | $3,733.00 | Dla | SPE2DS23P2012 | |
| Mar 9, 2023 | Stereo Optical Company, Inc 02012 | 2 | $3,733.00 | Dla | SPE2DS23P1003 | |
| Jan 27, 2023 | Stereo Optical Company, Inc 02012 | 1 | $3,525.00 | Dla | SPE2DS23P0743 | |
| Aug 12, 2022 | Stereo Optical Company, Inc 02012 | 2 | $3,525.00 | Dla | SPE2DS22V8911 | |
| Aug 1, 2022 | Stereo Optical Company, Inc 02012 | 2 | $3,525.00 | Dla | SPE2DS22V8430 | |
| May 18, 2022 | Stereo Optical Company, Inc 02012 | 1 | $3,525.00 | Dla | SPE2DS22V5691 |
Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 20 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 AFVT 2300.
Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.
DLA management data
- FLIS unit price
- $5,739.76
- Unit of issue
- EA
- Acquisition advice
- L — Not stocked, local purchase
- Source of supply
- SMS
- Effective
- Dec 1, 2025
Item characteristics
- Part Name Assigned By Controlling Agency
- STEREOSCOPE VISION TESTING NEAR DISTANT W/SLIDES 115V 60HZ AC
- Special Features
- NEAR DISTANT VISION TESTING,115 VOLT,60 HZ,AC; ARMED FORCES VISION TESTER; W/SLIDES; PERFORMS NINE TESTS WITHOUT REMOVAL OR REPLACEMENT OF SLIDES; 8-1/2 BY 11 IN. PLASTIC LAMINATED SCORING CARD,DUST C
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.