Self-Locking Plate Nut P/N MS21052-4W

Specifications

Thread class

3B

Thread direction

Right-Hand

Locking feature

Prevailing Torque All Metal Design

Welding projection quantity

2

Counterbore diameter

Nut Inches Minimum 0.254

Nut length

0.993 in maximum

Nut height

0.281 in maximum

Plate thickness

0.055 in maximum

Plate width

0.375–0.414 in

Nut counterbore depth

Nut Inches Minimum 0.062

Nut mounting provision

Welding Projections

Mounting provision location

Opposite Nut Projection Side

Temp rating

Fahrenheit Maximum 800.0

Thread series

Unified National Joint Fine (Unjf)

Thread quantity per inch

28

Hardness rating

Rockwell C Maximum 49.0

Nominal thread size

Inches 0.250

Material

Overall Iron Alloy 660

Material document and classification

Overall Assn STD Single Material Response A-S 5525 or Assn STD Single Material Response A-S 5732 or Assn STD Single Material Response A-S 5737

Precious material and location

Silver All Suraces

Precious material

Silver

Surface treatment

Overall Silver

Surface treatment document and classification

Overall Assn STD Single Treatment Response A-S 2410

From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.

Cross-reference part numbers

MS21052-4W

Also referenced as

6820359-428

Older, superseded, advisory or drawing numbers the federal catalog associates with this NSN — the ones in an old manual. They find the item; confirm the current part number when you order.

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	J Not stocked, centrally procured — the government does not stock this item; it is procured only when a requisition arrives. SECO has 1 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.

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FAQ

What is NSN 5310-01-094-4393?
NSN 5310-01-094-4393 (5310010944393) — Self-Locking Plate Nut: SECO Parts has 1 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for self-locking plate nut in federal supply class 5310 (Nuts and Washers).

Is NSN 5310-01-094-4393 available?
SECO Parts has 1 in stock in Augusta, GA — order or request a quote below.

How much does NSN 5310-01-094-4393 cost?
SECO typically prices parts like NSN 5310-01-094-4393 at $50–$100 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 5310-01-094-4393?
Part numbers that cross-reference this NSN include MS21052-4W. It is also referenced by older, superseded or advisory numbers: 6820359-428. SECO can quote against any of them.