PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST1227Installer,sleeve

Cummins Inc · NSN 5120-00-981-3108 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-981-3108 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-981-3108. Primary manufacturer part number: ST1227.
Features
  • Installer,sleeve — FSC 5120
  • General Characteristics Item Description: STEEL; BLACK OXIDE FINISH; 0.370 IN. DIA X 8 IN. LG; 60 DEG TAPERED POINT IN
  • Functional Description: USED TO INSTALL INJECTOR SLEEVE INTO CYLINDER HEAD
  • 6 verified cross-references
  • Primary manufacturer: Cummins Inc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Installer,sleeve, cataloged under National Stock Number 5120-00-981-3108, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Cummins Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-981-3108
Primary Part NumberST1227
Item NameInstaller,sleeve
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerCummins Inc
StatusCANCELLED
General Characteristics Item DescriptionSTEEL; BLACK OXIDE FINISH; 0.370 IN. DIA X 8 IN. LG; 60 DEG TAPERED POINT IN
Functional DescriptionUSED TO INSTALL INJECTOR SLEEVE INTO CYLINDER HEAD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
3110-00-144-89351063 INTERCHANGEABLE
Bearing,ball,annular
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
7510-01-197-9856112LNL-2 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
Valley Industrial Products Inc
5325-01-571-679211600050 INTERCHANGEABLE
Ring,retaining
Scubapro
2590-01-677-8614ST1227 INTERCHANGEABLE
Spacer,plate
Rolls-Royce Corporation
Cross-Reference Index
Part NumberManufacturer
ST632 Cummins Inc (USA)
11600050 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
981-3108 General Services Administration Federal Supply Service (USA)
MA326-21069 Am General Llc (USA)
ST567 Cummins Inc (USA)
ST1227 PRIMARY Cummins Inc (USA)
Related Parts
3110-00-144-8935INTERCHANGEABLE
BEARING,BALL,ANNULAR
1063
7510-01-197-9856INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
112LNL-2
5325-01-571-6792INTERCHANGEABLE
RING,RETAINING
11600050
2590-01-677-8614INTERCHANGEABLE
SPACER,PLATE
ST1227

Frequently Asked Questions

What is NSN 5120-00-981-3108?

NSN 5120-00-981-3108 is a Installer,sleeve, manufactured by Cummins Inc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-981-3108?

NSN 5120-00-981-3108 has 6 cross-referenced part numbers: ST632 (Cummins Inc), 11600050 (U S Army Tank Automotive Command Amsta-Im-Mm), 981-3108 (General Services Administration Federal Supply Service), MA326-21069 (Am General Llc), ST567 (Cummins Inc) and 1 more.

What NSN replaces 5120-00-981-3108?

There are 4 known substitutes for 5120-00-981-3108: 3110-00-144-8935, 7510-01-197-9856, 5325-01-571-6792 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ST1227?

Key specifications for ST1227: General Characteristics Item Description: STEEL; BLACK OXIDE FINISH; 0.370 IN. DIA X 8 IN. LG; 60 DEG TAPERED POINT IN; End Item Identification: CUMMINS SERIES C, J, NH, NT, V28, V378, V555, V903, V504 AND L10 ENGINES; Functional Description: USED TO INSTALL INJECTOR SLEEVE INTO CYLINDER HEAD. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-981-3108 still in active supply?

NSN 5120-00-981-3108 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com