PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RB15257-3Plug,protective,dust and Moistur

Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec · NSN 5340-00-817-0912 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-817-0912 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-817-0912. Primary manufacturer part number: RB15257-3.
Features
  • Plug,protective,dust and Moistur — FSC 5340
  • Material Document and Classification: QQ-A-250/2, 0 FED SPEC SINGLE MATERIAL RESPONSE
  • Features Provided: SHOULDER
  • Thread Size and Series/type Designator: 0.4375-20 UNF
  • Design Type: THREADED
  • Drive Type: SERRATED
  • Material: ALUMINUM ALLOY 3003
  • Overall Diameter: 0.580 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
Applications
  • Applications requiring Aluminum Alloy 3003 construction
General Description

The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-00-817-0912, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: HD.

Technical Specifications
ParameterValue
NSN5340-00-817-0912
Primary Part NumberRB15257-3
Item NamePlug,protective,dust and Moistur
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec
StatusCANCELLED
Material Document and ClassificationQQ-A-250/2, 0 FED SPEC SINGLE MATERIAL RESPONSE
Features ProvidedSHOULDER
Thread Size and Series/type Designator0.4375-20 UNF
Design TypeTHREADED
Drive TypeSERRATED
MaterialALUMINUM ALLOY 3003
Overall Diameter0.580 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5340-01-069-5917 (P4)
HAZMATNo
Unit of IssueHD
Verified Substitutes 12
5340-00-582-7717ASP-4 SUCCESSOR
Plug,protective,dust and Moistur
Parker Hannifin Corporation Div Hydraulic Systems Division
5340-01-069-5917P4 SUCCESSOR
Plug,protective,dust and Moistur
Primary Fluid Power Ltd
5340-01-568-7643P-4 SUCCESSOR
Plug Assembly,sealing
Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec
5340-01-655-4366P-4 SUCCESSOR
Grip,handle
Carbis Ladders Div of Carbis Sales Inc
5930-00-126-1751 INTERCHANGEABLE
Switch,rotary
3110-00-293-8438307KDG INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
2910-00-314-004150068 INTERCHANGEABLE
Cleaner
John Deer Consumer Products Inc
4320-00-494-0668A139839 INTERCHANGEABLE
Pump,rotary
Cnh Industrial America Llc Dba Cnh America
5340-00-597-9433NAS833-4 INTERCHANGEABLE
Plug,protective,dust and Moistur
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5815-00-602-2776SM-C-426570 INTERCHANGEABLE
Bar,t,teletypewriter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
P4 G T I Corp Clover Industries Div (USA)
10117462 Nimikkeistokeskus Ncb Finland (FIN)
29073 Pti Technologies Inc. (USA)
DS-920516 Eaton Aerospace, Llc Dba Jackson South (USA)
4120D588624 Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
NAS818-4 Prestolite Electric Limited (GBR)
NAS818-4 California Gasket and Rubber Corporation Dba California Gaket & Rubber Corp (USA)
RB15257-3 PRIMARY Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA)
NAS818-4 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
4120D588624 Parker Hannifin Corporation Div Aerospace Group Headquarters (USA)
P1000-4 Eaton Aerospace, Llc Dba Jackson South (USA)
ASP-4 Protective Closures Co Inc (USA)
50068 Parker Hannifin Gmbh (DEU)
10511273 General Dynamics Land Systems Canadacorp (CAN)
ASP-4 Caplugs Llc Dba Mokon Div Caplugs (USA)
DS-920516 Eaton Aerospace, Llc Dba Jackson South (USA)
Related Parts
SUCCESSOR 5340-01-069-5917 Plug,protective,dust and Moistur · P4
5340-00-582-7717SUCCESSOR
PLUG,PROTECTIVE,DUST AND MOISTUR
ASP-4
5340-01-568-7643SUCCESSOR
PLUG ASSEMBLY,SEALING
P-4
5340-01-655-4366SUCCESSOR
GRIP,HANDLE
P-4
5930-00-126-1751INTERCHANGEABLE
SWITCH,ROTARY
3110-00-293-8438INTERCHANGEABLE
BEARING,BALL,ANNULAR
307KDG
2910-00-314-0041INTERCHANGEABLE
CLEANER
50068
4320-00-494-0668INTERCHANGEABLE
PUMP,ROTARY
A139839
5340-00-597-9433INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
NAS833-4
5815-00-602-2776INTERCHANGEABLE
BAR,T,TELETYPEWRITER
SM-C-426570
4130-00-824-9197INTERCHANGEABLE
FILTER-DRIER,REFRIGERANT
059874
7050-00-978-8076INTERCHANGEABLE
LIGHT ASSEMBLY

Frequently Asked Questions

What is NSN 5340-00-817-0912?

NSN 5340-00-817-0912 is a Plug,protective,dust and Moistur, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-817-0912?

NSN 5340-00-817-0912 has 16 cross-referenced part numbers: P4 (G T I Corp Clover Industries Div), 10117462 (Nimikkeistokeskus Ncb Finland), 29073 (Pti Technologies Inc.), DS-920516 (Eaton Aerospace, Llc Dba Jackson South), 4120D588624 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters) and 11 more.

What NSN replaces 5340-00-817-0912?

There are 12 known substitutes for 5340-00-817-0912: 5340-00-582-7717, 5340-01-069-5917, 5340-01-568-7643 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RB15257-3?

Key specifications for RB15257-3: Material Document and Classification: QQ-A-250/2, 0 FED SPEC SINGLE MATERIAL RESPONSE; Features Provided: SHOULDER; Thread Size and Series/type Designator: 0.4375-20 UNF; Special Features: SHOULDER 0.220 IN. MIN THK; THD 0.430 IN. MIN 0.510 IN. MAX LG IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-817-0912 still in active supply?

NSN 5340-00-817-0912 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