NSN catalog · 90,963 partsCatalog › Hardware and Abrasives › FSC 5310 › 5310-01-265-9333
Key Washer P/N B3878-1
In stock — 3 on our U.S. shelfNSN 5310-01-265-9333 5310012659333 NIIN 012659333
SECO Parts has 3 in stock of NSN 5310-01-265-9333 — Key Washer — on our own shelf in Augusta, GA: a stocking supplier, not a broker. Typical price: $25–$40 each — an estimate from the government catalog price and what we have charged for similar parts. Not a quote: request one for your price. Quote lines carry a $50 minimum.
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,KEY
- SECO description
- WASHER, KEY
- Federal supply class
- FSC 5310 — Nuts and Washers
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 3 |
| Total | 3 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
5310-01-265-9333 012659333 B3878-1
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
- 0.640 in (nominal)
- External prebent key length
- 0.125 in (nominal)
- External prebent key width
- 0.400 in (nominal)
- Distance from centerline to inside of prebent key
- 0.785 in (nominal)
- Overall distance including keys
- 1.325 in (nominal)
- Material thickness
- 0.040 in (nominal)
- Minimum tensile strength
- Pounds Per Square Inch 180000
- Material
- Overall Steel Comp 4130
- Material document and classification
- Overall MIL Spec Single Material Response -IL-S-18729 or Assn STD Single Material Response A-S 6350
- Distance from centerline to end of key
- 0.825 in (nominal)
- Surface treatment
- Overall Cadmium and Chromate
- Surface treatment document and classification
- Overall Fed Spec Single Treatment Response QQ--416,TY 2,CL 1
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
B3878-1
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 3 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 5310-01-265-9333?
NSN 5310-01-265-9333 (5310012659333) — Key Washer: SECO Parts has 3 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for key washer in federal supply class 5310 (Nuts and Washers).
Is NSN 5310-01-265-9333 available?
SECO Parts has 3 in stock in Augusta, GA — order or request a quote below.
How much does NSN 5310-01-265-9333 cost?
SECO typically prices parts like NSN 5310-01-265-9333 at $25–$40 each: an estimate from the government catalog price and what SECO has charged for similar parts. It is not a quote — request one for your price, usually answered the same business day. Quote lines carry a $50 minimum.
What part numbers cross-reference to NSN 5310-01-265-9333?
Part numbers that cross-reference this NSN include B3878-1. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names WASHER,KEY. Same name is not the same part: check the part numbers.