43339 Business Park Dr. Suite 101, Temecula, CA 92590

43339 Business Park Dr Suite 101, Temecula, CA

Deltronic Thread Wire Metric Library – TW28M-L

$3,597.00



Call for more information | (951) 676-1616

All Thread Wire Libraries are available as ‘Master Libraries,’ which are used to calibrate ‘working’ wire sets by simple comparison techniques. Master Libraries consist of only one wire per pitch, calibrated to the sixth (one millionth) decimal place and include traceability through NIST test number. Master Thread Wire Libraries also include Gage-Carry Cases.

Contains 28, 3 Wire-Sets (.35mm-10.0mm, see standard sizes listed at left) packaged in a FREE wooden Gage-Carry Case.

Deltronic Thread Wire Metric Library - TW28M-L

The Deltronic Thread Wire Metric Library – TW28M-L provides comprehensive, in-house access to high-precision measuring wires for metric thread inspection. This complete thread wire library contains 28 three-wire sets, covering a full range of common metric thread pitches (1–20 threads per millimeter equivalent), and is engineered to support critical pitch diameter measurements using the three-wire method. Each wire set is calibrated, certified, and securely packaged in a labeled vial, all housed within a durable wooden Gage-Carry Case for easy access and mobility.

Manufactured to Deltronic’s rigorous quality standards, each thread wire in the TW28M-L Thread Wire Metric Library is traceable to the National Institute of Standards and Technology (NIST) and meets the dimensional and performance criteria required for precise thread plug gage certification and part inspection. Wire diameters are calibrated to the nearest 10 millionths of an inch (0.000010") and maintained within ±20 millionths (0.000020") of the ideal “best size.” All wires exhibit roundness within 10 millionths and feature a lapped surface finish finer than 2 microinches AA for exceptional contact accuracy.

Hardness ratings of Rc 62–64 and strict straightness tolerances across the central measuring section ensure long-term performance and repeatability. The inclusion of a Certificate of Accuracy with each set enhances traceability and supports compliance with quality management systems.

Ideal for quality control labs, inspection departments, and toolrooms, the TW28M-L Thread Wire Metric Library eliminates the need to source individual thread wires, streamlining your metrology processes and reducing downtime.

Thread Wire Metric Library

Additional information

Set Sizes

20 Thread Wire Sets, 34 Thread Wire Sets

Key Features

  • Includes 28 precision-calibrated 3-wire sets for metric thread inspection
  • Supports certified pitch diameter measurement using the three-wire method
  • Calibrated to ±0.000020” with NIST-traceable certification
  • Surface finish better than 2 µin AA, with roundness within 10 millionths
  • Packaged in a rugged, free wooden Gage-Carry Case for portability and organization

Specifications

  • Thread Pitch Range: Metric equivalents of 1–20 TPI
  • Wire Configuration: 3-wire sets per pitch
  • Calibration Accuracy: ±0.000020”, calibrated to ±0.000010”
  • Hardness: Rc 62–64, lapped and stabilized
  • Packaging: Labeled screw-top vials in a wooden Gage-Carry Case

In the Box

Pitch (MM) MM Inch Equivalent
0.20 0.1155 0.00455
0.225 0.1299 0.00511
0.25 0.1443 0.00568
0.30 0.1732 0.00682
0.35 0.2021 0.00796
0.40 0.2309 0.00909
0.45 0.2598 0.01023
0.50 0.2887 0.01137
0.55 0.3175 0.01250
0.60 0.3464 0.01364
0.70 0.4041 0.01591
0.75 0.4330 0.01705
0.80 0.4619 0.01818
0.85 0.4907 0.01932
0.90 0.5196 0.02046
1.00 0.5774 0.02273
1.25 0.7217 0.02841
1.50 0.8660 0.03410
1.75 1.0104 0.03978
2.00 1.1547 0.04546
2.50 1.4434 0.05683
3.00 1.7321 0.06819
3.50 2.0207 0.07956
4.00 2.3094 0.09092
4.50 2.5981 0.10229
5.00 2.8868 0.11365
5.50 3.1754 0.12502
6.00 3.4641 0.13638
7.00 4.0415 0.15911
8.00 4.6188 0.18184
9.00 5.1962 0.20457
10.00 5.7735 0.22730

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