Cummins S1037 Inverted Nut, Tube Coupling

Cummins S1037 is a engine component in Engine Parts, US catalog. Listed by US Government (DLA FLIS), October 2026.

Government data (US Government (DLA FLIS), October 2026 edition)

The U.S. government's Federal Logistics Information System (FLIS) records Cummins S1037 as the maker's own number under government stock item NSN 4730-00-278-5549. The name and every fact below are FLIS's, credited to US Government (DLA FLIS), October 2026 edition.

Specifications recorded for government stock item NSN 4730-00-278-5549, under which this manufacturer's reference number is listed. Confirm compatibility and specifications with the manufacturer before ordering.

Government item name

Inverted Nut, Tube Coupling

Government stock item (NSN)

4730-00-278-5549

Manufacturer code (CAGE)

15434, CUMMINS INC., COLUMBUS, IN, UNITED STATES

Thread class

2A

Thread direction

Right-hand

Fabrication method

Bar stock, machined

Casehardening indicator

Not case-hardened

Overall length

0.797 in (nominal)

Thread size

7/8-18

Tube outside diameter for which designed

0.625 in (nominal)

Seat angle in deg

45.000

Screw thread series designator

UNS

Width across flats

0.875 in (nominal)

Smallest inside diameter

0.632 in (nominal)

Material

Steel

Source: US Government (DLA FLIS), October 2026 edition, a public U.S. government data release. This is not an official DLA record and may contain errors. Verify fitment before ordering. Not affiliated with or endorsed by the Defense Logistics Agency or the Department of Defense. SearchForPart does not show a price here.

About this kind of part (general, written by SearchForPart)

A part of an engine named by its use. Replaced when worn, leaking or damaged. Check the engine model and serial range.

When ordering, give the part number exactly as printed and its maker, and the make, model and year of the truck, trailer, reefer unit or machine (or the engine or unit serial number). SearchForPart shows fitment only as the source printed it: check it before you order.

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Source: US Government (DLA FLIS), October 2026 edition, a public U.S. government data release. This is not an official DLA record and may contain errors. Verify fitment before ordering. Not affiliated with or endorsed by the Defense Logistics Agency or the Department of Defense. SearchForPart does not show a price here.