Home · NSN 01-735-6251

NSN 01-735-6251 — Screw,Cap,Socket Head

NIIN 01-735-6251 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 01-735-6251 is the national stock number for a screw,cap,socket head. It cross-references to 6 manufacturer part numbers from 4 CAGE codes, including National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use, Naval Sea Systems Command, Electric Boat Corporation; the primary is 665-698415-551. The unit of issue is EA and the FLIS list price is $100.00.

No government purchase of this stock number is on our record yet. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

6

part numbers from 4 CAGEs

0

open solicitations, all agencies

0

government buys in 24 months

0

sellers with confirmed stock

Watch NSN 01-735-6251: an email the morning the government solicits or buys it, or an AD names it. Free.
Know someone who should see this?

Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part numberCAGEManufacturerReferenceVariation
MS24667-31BL80205National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use3 · Design control (vendor)2 · Fully interchangeable
NASM2466780205National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use3 · Design control (vendor)1 · Not fully interchangeable
665-698415-55153711Naval Sea Systems Command5 · Secondary reference2 · Fully interchangeable
68-17-1100A96169Electric Boat Corporation5 · Secondary reference2 · Fully interchangeable
ERH581-0401A117-55153711Naval Sea Systems Command5 · Secondary reference2 · Fully interchangeable
H581-0401-55196169Electric Boat Corporation5 · Secondary reference2 · Fully interchangeable
MS24667-31BL96906Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M5 · Secondary reference9 · Reference only

Government demand

Nothing open right now. Watch this NSN and we will email you when it is solicited.

What the government paid

No government purchase on record for this NSN.

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 665-698415-551.

Request 665-698415-551

No account needed. Goes to the sellers who carry this number or its family.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price
$100.00
Unit of issue
EA
Acquisition advice
J — Not stocked, central procurement
Source of supply
SMS
Effective
Dec 1, 2025

Item characteristics

Thread Class
3A
Thread Direction
RIGHT-HAND
Thread Length
INCHES MINIMUM 0.97 AND INCHES MAXIMUM 1.00
Fastener Length
INCHES MINIMUM 0.97 AND INCHES MAXIMUM 1.00
Head Diameter
INCHES MINIMUM 0.480 AND INCHES MAXIMUM 0.531
Head Height
INCHES NOMINAL 0.161
Locking Feature
LOCKING FEATURE PATCH OR STRIP
Nominal Thread Diameter
INCHES 0.250
Width Across Flats
INCHES NOMINAL 0.156
Thread Quantity Per Inch
20
Countersink Angle
DEGREES MINIMUM 80.0 AND DEGREES MAXIMUM 84.0
Part Name Assigned By Controlling Agency
SCREW,CAP,SOCKET HEAD,FLAT COUNTERSUNK,82 DEGREE,ALLOY STEEL,UNC-3A
Color
FASTENER BLACK
Material
FASTENER STEEL
Material Document And Classification
FASTENER FED SPEC SINGLE MATERIAL RESPONSE FF-S-86
Surface Treatment
FASTENER BLACK CHEMICAL FINISH
Surface Treatment Document And Classification
FASTENER MIL SPEC SINGLE TREATMENT RESPONSE -IL-DTL-13924,CLASS 1 OR -IL-DTL-16232,TYE -,CLASS 4
Thread Series Designator
UNIFIED NATIONAL COARSE (UNC)
Specification/Standard Data
PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD 80205-NAS-24667

Related stock numbers

Other NSNs filed under the same part numbers.

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.

Get the daily Market Pulse

New DLA RFQs, SAM.gov notices, yesterday's awards and FAA directives, weekday mornings. Free, one click to leave.