Setscrew P/N MS51963-83

Specifications

Fastener length

0.375 in (nominal)

Material document and classification

Overall Fed STD All Material Responses 66

Hardness rating

Overall Rockwell C Minimum 45.0 and Rockwell C Maximum 53.0

Surface treatment document and classification

Overall Fed Spec Single Treatment Response QQ--416 TY 2 CL 3

Thread series designator

Unified National Coarse (UNC)

Thread quantity per inch

18

Nominal thread diameter

Inches 0.312

Width across flats

0.156 in (nominal)

Surface treatment

Overall Cadmium and Chromate

Thread class

3A

Thread direction

Right-Hand

Thread length

0.375 in maximum

Material

Overall Steel Comp 4037 or Steel Comp 4137 or Steel Comp 4140 or Steel Comp 8630 or Steel Comp 8740

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

Cross-reference part numbers

MS51963-83 2552093-4

Also referenced as

191950 191942 A93291 FFS200 MX-261193-3 PIECE 28 MX-242266-3 PIE MX242266-3PC28 MS51963-83 5/16 -18UNC-3AX3/8 L SP-59 PIECE 51 110258

Older, superseded, advisory or drawing numbers the federal catalog associates with this NSN — the ones in an old manual.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	Z Insurance/numeric stockage objective — held by the government as insurance stock for contingencies, not for routine issue. SECO has 68 on the shelf
Unit of issue	HD hundred
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 5305-00-724-5898?
NSN 5305-00-724-5898 (5305007245898) — Setscrew: SECO Parts has 68 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for setscrew in federal supply class 5305 (Screws).

Is NSN 5305-00-724-5898 available?
SECO Parts has 68 in stock in Augusta, GA — order or request a quote below.

How much does NSN 5305-00-724-5898 cost?
SECO quotes NSN 5305-00-724-5898 on request, usually the same business day.

What part numbers cross-reference to NSN 5305-00-724-5898?
Part numbers that cross-reference this NSN include MS51963-83, 2552093-4. It is also referenced by older, superseded or advisory numbers: 191950, 191942, A93291, FFS200, MX-261193-3 PIECE 28, MX-242266-3 PIE. SECO can quote against any of them.