NSN catalog · 90,963 partsCatalog › Hardware and Abrasives › FSC 5310 › 5310-01-057-5689
Recessed Washer P/N MS21206-C4
In stock — 21 on our U.S. shelfNSN 5310-01-057-5689 5310010575689 NIIN 010575689
SECO Parts has 21 in stock of NSN 5310-01-057-5689 — Recessed Washer — on our own shelf in Augusta, GA: a stocking supplier, not a broker. Low-cost part: quoted by the line, $50 minimum per line; quantity pricing on request.
One part, one step — answered within one business day. Several parts? and send them together.
- Ships in 1–3 business days from Augusta, GA
- Certificate of Conformance on request
- PO, GPC & major cards
- $50 minimum order — smaller requests still get a quote
- 30-day returns · terms
- FLIS item name
- WASHER,RECESSED
- SECO description
- WASHER, RECESSED
- Federal supply class
- FSC 5310 — Nuts and Washers
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 21 |
| Total | 21 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
5310-01-057-5689 010575689 MS21206-C4
Get a quote
Build a list across as many parts as you need, send it once, get one quote back — answered within one business day, usually the same day. POs and GPC welcome. $50 minimum order.
More to tell us? Need-by date, ship-to, your own RFQ document
Specifications
- Hole diameter
- 0.251–0.255 in
- Outside diameter
- 0.460–0.470 in
- Recess diameter
- 0.340–0.350 in
- Material thickness
- 0.057–0.069 in
- Hardness rating
- Rockwell C Minimum 38.0 and Rockwell C Maximum 45.0
- Recess angle
- 90.0 ° (nominal)
- Material
- Overall Steel Comp 4130
- Material document and classification
- Overall MIL Spec 1ST Material Response -IL-S-658 or MIL Spec 2ND Material Response -IL-S-18729
- Surface treatment
- Overall Cadmium
- Surface treatment document and classification
- Overall Fed Spec Single Treatment Response QQ--416,TY 2,CL 2
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
MS21206-C4
Shown for identification only. SECO can quote against any of these numbers.
Logistics data
| Source of supply | SMS DLA Land and Maritime, Columbus, Ohio |
| Acquisition advice code | Z Insurance/numeric stockage objective — held by the government as insurance stock for contingencies, not for routine issue. SECO has 21 on the shelf |
| Unit of issue | EA each |
| Demilitarization code | A Demilitarization not required — non-munitions-list item |
| Controlled inventory code | U Unclassified |
| Hazardous material indicator | N No hazardous material |
Source: public FLIS/PUB LOG cataloging data.
Why buy from SECO
These quantities sit on our own shelves — we are a stocking supplier, not a broker sourcing after you order. Condition-coded stock, formal quotes with NSN/PN on the paperwork, POs and GPC welcome, fast U.S. shipping.
In business since 1951 · 30,000+ contracts completed · about SECO & our policies · more questions answered
FAQ
What is NSN 5310-01-057-5689?
NSN 5310-01-057-5689 (5310010575689) — Recessed Washer: SECO Parts has 21 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for recessed washer in federal supply class 5310 (Nuts and Washers).
Is NSN 5310-01-057-5689 available?
SECO Parts has 21 in stock in Augusta, GA — order or request a quote below.
How much does NSN 5310-01-057-5689 cost?
NSN 5310-01-057-5689 is a low-cost part, so SECO quotes it by the line rather than by the piece: there is a $50 minimum per line, and quantity pricing on request — usually answered the same business day.
What part numbers cross-reference to NSN 5310-01-057-5689?
Part numbers that cross-reference this NSN include MS21206-C4. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names WASHER,RECESSED. Same name is not the same part: check the part numbers.