Machine Bolt P/N S1577

Specifications

Thread quantity per inch

18

Hardness rating

Overall Rockwell C Minimum 32.0 and Rockwell C Maximum 38.0

Head height

0.469 in (nominal)

Nominal thread diameter

Inches 0.625

Nondefinitive spec/std data

Type 1 and Grade 8

Material

Overall Steel

Minimum tensile strength

Pounds Per Square Inch 150000

Thread class

2A

Material document and classification

Overall MIL Spec Single Material Response -IL-S-1222,GR 8

Thread series designator

UNF

Features provided

Finished Head

Thread length

0.969 in minimum

Fastener length

2.250 in (nominal)

Width between flats

0.938 in (nominal)

Thread direction

Right-Hand

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

Cross-reference part numbers

S1577 0035248-4 0035248 0S1577 MIL-S-1222 035248

Also referenced as

25053R1

Older, superseded, advisory or drawing numbers the federal catalog associates with this NSN — the ones in an old manual.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 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.

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FAQ

What is NSN 5306-00-260-4502?
NSN 5306-00-260-4502 (5306002604502) — Machine Bolt: SECO Parts has 3 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for machine bolt in federal supply class 5306 (Bolts).

Is NSN 5306-00-260-4502 available?
SECO Parts has 3 in stock in Augusta, GA — order or request a quote below.

How much does NSN 5306-00-260-4502 cost?
SECO typically prices parts like NSN 5306-00-260-4502 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 5306-00-260-4502?
Part numbers that cross-reference this NSN include S1577, 0035248-4, 0035248, 0S1577, MIL-S-1222, 035248. It is also referenced by older, superseded or advisory numbers: 25053R1. SECO can quote against any of them.