PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1600-4Tachometer,mechanical,handheld

Jones Instrument Corp · NSN 6680-00-921-1039 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-921-1039 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-921-1039. Primary manufacturer part number: 1600-4.
Features
  • Tachometer,mechanical,handheld — FSC 6680
  • Accessory Components and Quantity: 1 TRIANGULAR STEEL POINT,1 FOUR IN. EXTENSION ROD,1 RUBBER CONCAVE TIP,1 SMALL RUBBER CONVEX TIP,1 LARGE RUBBER CONVEX TIP,AND 1 RUBBER TIRED WHEEL
  • Scale Quantity: 1
  • Speed Selector: NOT PROVIDED
  • Pointer Quantity: 1
  • Unit Type: CENTRIFUGAL
  • Scale Measurement Unit: FEET PER MINUTE
  • Nondefinitive Spec/std Data: IC/BPB-2 TYPE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tachometer,mechanical,handheld, cataloged under National Stock Number 6680-00-921-1039, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Jones Instrument Corp. Government technical data includes 13 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-921-1039
Primary Part Number1600-4
Item NameTachometer,mechanical,handheld
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerJones Instrument Corp
StatusACTIVE
Accessory Components and Quantity1 TRIANGULAR STEEL POINT,1 FOUR IN. EXTENSION ROD,1 RUBBER CONCAVE TIP,1 SMALL RUBBER CONVEX TIP,1 LARGE RUBBER CONVEX TIP,AND 1 RUBBER TIRED WHEEL
Scale Quantity1
Speed SelectorNOT PROVIDED
Pointer Quantity1
Unit TypeCENTRIFUGAL
Scale Measurement UnitFEET PER MINUTE
Nondefinitive Spec/std DataIC/BPB-2 TYPE
Manual ResetPROVIDED
Scale Smallest Increment20.0 REVOLUTIONS PER MINUTE AND 10.0 FEET PER MINUTE FT
Scale Measurement Range+300.0 TO 3000.0
Carrying CasePROVIDED
Measurement UnitFEET PER MINUTE AND REVOLUTIONS PER MINUTE
Operating Range+150.0 TO 1500.0 FEET PER MINUTE AND +300.0 TO 3000.0 REVOLUTIONS PER MINUTE FT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5945-00-118-8222508660 INTERCHANGEABLE
Relay,electromagnetic
Kidde-Fenwal, Llc
6680-00-234-9245 INTERCHANGEABLE
Tachometer,mechanical,handheld
6680-00-242-43644401-H INTERCHANGEABLE
Tachometer,mechanical,handheld
Herman H Sticht Company, Inc Dba Megohmer Vibrating Reed & Standco
6680-00-276-7532312 INTERCHANGEABLE
Tachometer,mechanical,handheld
Herman H Sticht Company, Inc Dba Megohmer Vibrating Reed & Standco
6680-00-557-5328 INTERCHANGEABLE
Generator,tachometer
6320-00-893-2857 INTERCHANGEABLE
Indicator,ship's Engine Order
4935-00-974-881416004 INTERCHANGEABLE
Amplifier Unit,plug
Microwave Engineering Corporation
5940-00-983-6045 INTERCHANGEABLE
Terminal Board
5975-00-984-6582MS3367-1-0 INTERCHANGEABLE
Strap,tie Down,electrical Compon
Sae International Dba Sae International
6680-01-069-0428 INTERCHANGEABLE
Tachometer,mechanical,handheld
Cross-Reference Index
Part NumberManufacturer
1600-4 Jones Instrument Corp (USA)
1600-4 Schulze Mfg., Inc. (USA)
MIL-T-16049 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
IC/BPB-2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1600 Jones Instrument Corp (USA)
1600 Schulze Mfg., Inc. (USA)
Related Parts
5945-00-118-8222INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
508660
6680-00-234-9245INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
6680-00-242-4364INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
4401-H
6680-00-276-7532INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
312
6680-00-557-5328INTERCHANGEABLE
GENERATOR,TACHOMETER
6320-00-893-2857INTERCHANGEABLE
INDICATOR,SHIP'S ENGINE ORDER
4935-00-974-8814INTERCHANGEABLE
AMPLIFIER UNIT,PLUG
16004
5940-00-983-6045INTERCHANGEABLE
TERMINAL BOARD
5975-00-984-6582INTERCHANGEABLE
STRAP,TIE DOWN,ELECTRICAL COMPON
MS3367-1-0
6680-01-069-0428INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
6680-01-069-1825INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
4820-01-220-2175INTERCHANGEABLE
STEM,FLUID VALVE
16004

Frequently Asked Questions

What is NSN 6680-00-921-1039?

NSN 6680-00-921-1039 is a Tachometer,mechanical,handheld, manufactured by Jones Instrument Corp, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-921-1039?

NSN 6680-00-921-1039 has 6 cross-referenced part numbers: 1600-4 (Jones Instrument Corp), 1600-4 (Schulze Mfg., Inc.), MIL-T-16049 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), IC/BPB-2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 1600 (Jones Instrument Corp) and 1 more.

What NSN replaces 6680-00-921-1039?

There are 12 known substitutes for 6680-00-921-1039: 5945-00-118-8222, 6680-00-234-9245, 6680-00-242-4364 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1600-4?

Key specifications for 1600-4: Accessory Components and Quantity: 1 TRIANGULAR STEEL POINT,1 FOUR IN. EXTENSION ROD,1 RUBBER CONCAVE TIP,1 SMALL RUBBER CONVEX TIP,1 LARGE RUBBER CONVEX TIP,AND 1 RUBBER TIRED WHEEL; Scale Quantity: 1; Speed Selector: NOT PROVIDED; Pointer Quantity: 1. 13 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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