Home · FSC 5305 Screws · NSN 5305-01-051-0637

NSN 5305-01-051-0637 — Screw,Close Tolerance

NIIN 01-051-0637 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 5305-01-051-0637 is the national stock number for a screw,close tolerance in federal supply class 5305 (Screws). It cross-references to 1 manufacturer part number from 1 CAGE code, including The Boeing Company; the primary is BACB30LR4U23. The unit of issue is EA and the FLIS list price is $8.45.

The U.S. government has bought this item 1 time on record, 1 of them in the last 24 months, most recently on September 28, 2026 for $2,031 from Xxl Transportation L.L.C.. 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.

part number from 1 CAGE

open solicitations, all agencies

government buy in 24 months

sellers with confirmed stock

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 number	CAGE	Manufacturer	Reference	Variation
BACB30LR4U23	81205	The Boeing Company	3 · Design control (vendor)	2 · Fully interchangeable

Government demand

Nothing open right now. Last government buy Sep 28, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

Date	Vendor	Qty	Unit cost	Amount	Buyer	Reference
Sep 28, 2026	Xxl Transportation L.L.C. 170H9			$2,031	Dla	SPE4A626PBBBH » Award/Basic Package View

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 1 buy on record in total.

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 BACB30LR4U23.

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

DLA management data

FLIS unit price: $8.45
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Thread Class: 3A
Thread Direction: RIGHT-HAND
Thread Length: INCHES MINIMUM 0.400 AND INCHES MAXIMUM 0.450
Fastener Length: INCHES MINIMUM 1.848 AND INCHES MAXIMUM 1.878
Head Diameter: INCHES MINIMUM 0.455 AND INCHES MAXIMUM 0.510
Grip Diameter: INCHES MINIMUM 0.2490 AND INCHES MAXIMUM 0.2495
Nominal Thread Diameter: INCHES 0.250
Grip Length: INCHES MINIMUM 1.428 AND INCHES MAXIMUM 1.448
Thread Quantity Per Inch: 28
Countersink Angle: DEGREES NOMINAL 100.0
Surface Finish: GRIP MICROINCHES 32.0
Surface Finish: THREADS MICROINCHES 32.0
Material: OVERALL IRON ALLOY 660
Surface Treatment: OVERALL PASSIVATE
Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF)

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.