PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1240Indicator,turn and Slip

Allen R C Instruments Inc · NSN 6610-00-531-6153 · FSC 6610 · No Item Name Available
Verified by PartsTable
NSN 6610-00-531-6153 — this item is cataloged by the U.S. Government under National Stock Number 6610-00-531-6153. Primary manufacturer part number: A1240.
Features
  • Indicator,turn and Slip — FSC 6610
  • Contact Quantity: 3
  • Width: 3.250 INCHES NOMINAL IN
  • Depth: 6.625 INCHES NOMINAL IN
  • Current Type: DC
  • Height: 3.250 INCHES NOMINAL IN
  • Electrical Connection Quantity: 1
  • Mounting Facility Type and Quantity: 1 THREADED BEZEL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,turn and Slip, cataloged under National Stock Number 6610-00-531-6153, is classified within Federal Supply Class 6610 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Allen R C Instruments Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6610-00-531-6153
Primary Part NumberA1240
Item NameIndicator,turn and Slip
FSC / FSG6610 / 66 — No Item Name Available
ManufacturerAllen R C Instruments Inc
StatusACTIVE
Contact Quantity3
Width3.250 INCHES NOMINAL IN
Depth6.625 INCHES NOMINAL IN
Current TypeDC
Height3.250 INCHES NOMINAL IN
Electrical Connection Quantity1
Mounting Facility Type and Quantity1 THREADED BEZEL
Pointer PurposeUSED TO SHOW TURN OF AIRCRAFT
Contact TypePIN
Nondefinitive Spec/std Data2 TYPE
Electrical Connection Identifying NumberPART NO. AN3102-10SL-3P
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
8455-00-131-2106 INTERCHANGEABLE
Insignia,shoulder Sleeve
5930-00-258-6083A12-40 INTERCHANGEABLE
Switch,pressure
Nason Company, the Inc
8455-00-641-8928 INTERCHANGEABLE
Insignia,shoulder Sleeve
5999-01-102-1047 INTERCHANGEABLE
Contact,electrical
5945-01-265-0990 INTERCHANGEABLE
Relay,solid State
8455-01-528-9094 INTERCHANGEABLE
Insignia,shoulder Sleeve
8455-01-660-5399 INTERCHANGEABLE
Insignia,shoulder Sleeve
8455-01-700-1434 INTERCHANGEABLE
Insignia,shoulder Sleeve
Cross-Reference Index
Part NumberManufacturer
A1240 Allen R C Instruments Inc (USA)
RCA4 Allen R C Co Inc Cash Register Div (USA)
RCA4 Kelly Manufacturing Company (USA)
A1240 Allen R C Co Inc Cash Register Div (USA)
A1240 Kelly Manufacturing Company (USA)
RCA4 Allen R C Instruments Inc (USA)
Related Parts
8455-00-131-2106INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
5930-00-258-6083INTERCHANGEABLE
SWITCH,PRESSURE
A12-40
8455-00-641-8928INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
5999-01-102-1047INTERCHANGEABLE
CONTACT,ELECTRICAL
5945-01-265-0990INTERCHANGEABLE
RELAY,SOLID STATE
8455-01-528-9094INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-660-5399INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-700-1434INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 6610-00-531-6153?

NSN 6610-00-531-6153 is a Indicator,turn and Slip, manufactured by Allen R C Instruments Inc, classified under FSC 6610 (No Item Name Available). Status: active.

What are the part numbers for NSN 6610-00-531-6153?

NSN 6610-00-531-6153 has 6 cross-referenced part numbers: A1240 (Allen R C Instruments Inc), RCA4 (Allen R C Co Inc Cash Register Div), RCA4 (Kelly Manufacturing Company), A1240 (Allen R C Co Inc Cash Register Div), A1240 (Kelly Manufacturing Company) and 1 more.

What NSN replaces 6610-00-531-6153?

There are 8 known substitutes for 6610-00-531-6153: 8455-00-131-2106, 5930-00-258-6083, 8455-00-641-8928 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A1240?

Key specifications for A1240: Contact Quantity: 3; Width: 3.250 INCHES NOMINAL IN; Depth: 6.625 INCHES NOMINAL IN; Current Type: DC. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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