Aircraft Fasteners stocks the broadest range of threaded inserts and studs in the industry. One of our primary insert and stud manufacturers is Acme Industrial Company. Since 1914, Acme Industrial has been a major force in supplying precision steel products to the industrial and military sectors. Rely on Acme's many years of experience to provide the quality you expect from a fastener manufacturer as evidenced by approvals from major worldwide aerospace manufacturers.
Acme Industrial Company Products include:
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Keylocking Threaded Inserts
Acme keylocking threaded inserts are used to quickly repair stripped, damaged or worn out threads. Threaded insert products are also used in original equipment where they strengthen threads in soft metal like magnesium or aluminum.
Acme threaded inserts are easy to install and remove. No special drills, taps or pre-winder tools are required. The keys are driven down into the threads of the surrounding base material, locking the insert in place.
Benefits of Acme Threaded Inserts:
- Solid, one-piece threaded insert construction provides a high degree of pull-out strength
- Threaded Insert Keys supply a positive mechanical lock against rotation
- Easy threaded insert installation and removal: Installed with standard drills and taps, No pre-winder tool required
- No tang to break off
Acme Threaded Inserts Specifications:
- Acme threaded inserts may be used in many types of materials
- Acme threaded inserts come in sizes: Miniature, Lightweight, Heavy Duty and Extra Heavy Duty threaded insert types with Non-locking and Self-locking internal threads
- Full range of Inch and Metric sizes in coarse or fine pitch threads
- Inserts for specific uses are available in floating, blind end, solid and cast-in configurations
- Industrial Style Threaded inserts can be purchased in bulk quantities or kits
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MS & NAS Style threaded inserts are produced to the following standards:
MS51830 NAS1395 NA0149
MS51831 NA0146 NA0150
MS51832 NA0147 NA0151
NAS1394 NA0148
Examples of Acme Threaded Insert Inventory
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Click on any of the Acme Industrial Company threaded insert part numbers below to check inventory or to Request a Quote.
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Part Number
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Part Description
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Vendor
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Alternative Part
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4MMX07K-SERT303N/L
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INSERT, KEY-LOCKED, 4MM 303
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ACME
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217-076386
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4MX07HVYK-SERT303SS
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INSERT, KEY-LOCKED, 4MM HVY
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ACME
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215-066363
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8MMX125K-SERT303N/L
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INSERT, KEY-LOCKED, 8MMX1.25
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ACME
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215-066353
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INSERTLTM6X10CARBSTL
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INSERT, KEY-LOCKED, 6MM CARB.
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ACME
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215-065952
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M2X04NLKSERTSS
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INSERT, KEY-LOCKED, 2MM X .4
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ACME
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217-076382
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M3X05SL303CRES
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INSERT, KEY-LOCKED, 3MMX0.5
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ACME
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217-077384
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M4X07SL303SS/DFL
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INSERT, KEY-LOCKED, M4X0.7
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ACME
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217-077386
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M5X08LITEN/L303
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INSERT, KEY-LOCKED, 5MM
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ACME
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215-066351
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M6X10HVYN/L303
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INSERT, KEY-LOCKED, 6MM HVY
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ACME
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215-066365
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MS51830A104L
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INSERT, KEY-LOCKED, 8-32 S/L
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ACME
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217-081286
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MS51830A202
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INSERT, KEY-LOCKED, 1/4-28
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ACME
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217-080522
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MS51830A202L
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INSERT, KEY-LOCKED, 1/4-28
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ACME
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217-081522
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MS51831A102
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INSERT, KEY-LOCKED, 1/4-20
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ACME
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217-080302
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NA0149E050
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INSERT, KEY-LOCKED, 5MM
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ACME
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217-079351
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Acme Keylocking Studs
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Acme keylocking studs provide security and "reparability" in applications where a through-bolt/nut combination cannot be used. Acme keylocking studs are superior for use in soft materials such as aluminum or magnesium when extra strength, extended thread life and vibration-resistance are required. These high performing keylocking studs are engineered and manufactured to meet or exceed today's high quality requirements and demands.
Benefits of Acme Threaded Inserts:
- Securely Locked with Keys
- Solid One-Piece Design Provides High Pull-Out Strength and Torque-Out Capabilities
- Ideal for OEM Use, Thread Repair or High Vibration Applications
Acme Keylocking Studs Specifications:
- Produced to NAS and SAE standards (MS51833 and MS51834)
- Offered in a full range of inch and metric sizes
- Available in 303, A286, and 17-4PH CRES and 4140 Alloy Steel
- Lightweight and heavy duty versions available
- Precision rolled UNJ threads allow transfer of high axial loads into base material
- Short Lead Times, Competitive Prices, Top Quality, Made in USA
Examples of Acme Keylocking Stud Inventory
Click on any of the Acme Industrial Company keylocking stud part numbers below to check inventory or to Request a Quote.

Link to Manufacturer Website: http://www.acmeindustrial.com/
We are authorized distributors for the premier manufacturers of these products.
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