Close Tolerance Screw P/N NAS1578A3T25

Specifications

Thread class

3A

Thread direction

Right-Hand

Thread length

0.363 in (nominal)

Fastener length

1.910–1.940 in

Head diameter

0.360–0.375 in

Head height

0.115–0.125 in

Grip diameter

0.1890–0.1895 in

Nominal thread diameter

Inches 0.190

Grip length

1.552–1.572 in

Thread quantity per inch

32

Minimum tensile strength

Pounds Per Square Inch 160000

Material

Overall Steel Comp 4140 or Steel Comp 4340 or Steel Comp 8740

Material document and classification

Overall MIL Spec 1ST Material Response -IL-S-5626 or MIL Spec 2ND Material Response -IL-S-5000 or MIL Spec 3RD Material Response -IL-S-6049

Surface treatment

Overall Passivate or Chromate or Chromate

Surface treatment document and classification

Overall Fed Spec 1ST Treatment Response QQ--35 or Fed Spec 2ND Treatment Response QQ--416,CL 2,TY 2

Thread series designator

Unified National Joint Fine (Unjf)

Specification/standard data

Professional/industrial Association Standard 80205-NAS1578

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

Cross-reference part numbers

NAS1578A3T25

Also referenced as

NAS1578A3R25

Older, superseded, advisory or drawing numbers the federal catalog associates with this NSN — the ones in an old manual.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 15 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 5305-01-365-4869?
NSN 5305-01-365-4869 (5305013654869) — Close Tolerance Screw: SECO Parts has 15 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for close tolerance screw in federal supply class 5305 (Screws).

Is NSN 5305-01-365-4869 available?
SECO Parts has 15 in stock in Augusta, GA — order or request a quote below.

How much does NSN 5305-01-365-4869 cost?
The government catalog (FEDLOG) lists NSN 5305-01-365-4869 at $113.18 per each. That is a public reference, not SECO's price: SECO quotes each request, usually the same business day, and surplus parts often quote below or above it.

What part numbers cross-reference to NSN 5305-01-365-4869?
Part numbers that cross-reference this NSN include NAS1578A3T25. It is also referenced by older, superseded or advisory numbers: NAS1578A3R25. SECO can quote against any of them.