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MS21209 Wire Thread Insert
-- Steady & Reliable Manufacturer --
Product Overview
This insert is manufactured to the MS21209 military specification, covering both free-running (Type I) and screw-locking (Type II) coil inserts used on defense and aerospace drawings that call out MS21209 directly rather than a commercial equivalent. Dimensions, tolerances and locking torque values follow the MS21209 tables by thread size.
We produce this insert for buyers who need drawing-callout compliance and full lot traceability, including defense subcontractors, aerospace MRO shops and government-contract machine shops, and can issue certificates that reference the MS21209 standard directly.
Specifications
| Item | Detail |
|---|---|
| Standard | MS21209 (Type I free running, Type II screw locking) |
| Material | 300 series corrosion-resistant steel per MS21209 material call-out |
| Thread Size Range | Metric and Unified sizes per MS21209 tables, #2-56 – 1"-14 |
| Length Options | 1D through 3D per MS21209 length designation code |
| Locking Torque | Per MS21209 prevailing-torque table by size (Type II) |
| Surface Finish | Passivated per QQ-P-35 / ASTM A967 |
| Traceability | Full lot traceability, certificate referencing MS21209 |
| Packaging | Poly bag labeled by MS21209 part number, inner box, export carton |
Application Fields
- ✓Military and defense airframe assemblies
- ✓Government-contract machine shop production runs
- ✓Aerospace MRO and depot-level repair
- ✓Ground support and munitions handling equipment
- ✓Shipboard and naval hardware
- ✓Sustainment programs for legacy equipment specifying MS21209
Key Advantages
- Manufactured directly to the MS21209 callout, so it satisfies drawings that will not accept a commercial-equivalent part number.
- Dimensional and locking-torque data reference the MS21209 table directly, which simplifies first-article inspection.
- Full certificate and lot traceability support the documentation requirements common on defense contracts.
- Both Type I and Type II are available from the same production line, avoiding the need to dual-source two part families.
- Long-term production support is available for sustainment programs on older platforms still specifying MS21209.
Company Profile
Dongtai Jinzhize Metal Products Co., Ltd.
As MS21209 Wire Thread Insert Manufacturer and MS21209 Wire Thread Insert Factory, Dongtai Jinzhize Metal Products Co., Ltd. is a specialized manufacturing facility dedicated to threaded connection products for the automotive and aerospace sectors. We primarily produce Helical Wire Inserts, Self-Tapping Inserts, Key Locking Inserts, Threaded Adapters, Oil Plugs, as well as matching installation taps and tools.
Established in 2015, the company operates from a 10,000-square-meter-owned manufacturing plant equipped with hundreds of machine tools and automated production systems. Through years of development, we have built an experienced team of design, development, and production specialists, complemented by a rigorous quality management system and comprehensive after-sales service mechanism.
Our products are widely utilized in the automotive industry (including engines and transmissions for both passenger and commercial vehicles), the aerospace industry, and rail vehicle manufacturing.
With an annual output value of 153 million RMB in 2024, we possess the capability for a large-scale, stable supply. We are committed to providing customers with highly consistent, traceable products and reliable service support.
