Low Strength Purple Threadlocker, Small Screws – MIL-S-46163A – MRO
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- ✓ Low-strength hold for small screws under 1/4″ in diameter
- ✓ Backs out easily with hand tools – ideal for frequent adjustment
- ✓ Meets MIL-S-46163A, Type II, Grade M
- ✓ Holds against vibration without over-locking small hardware
High Demand Item – Frequently Reordered by Contractors
Solution 15 is a low-strength, single-component anaerobic purple threadlocker (screw lock) for small screws – those under 1/4 inch in diameter. It holds small hardware against vibration while still backing out easily with hand tools, so it’s the right grade for fasteners you adjust or service often.
Supplied as a purple liquid with the lowest removal strength of the threadlocker grades – treated screws come apart with standard hand tools. Available in 10 ml, 50 ml, and 250 ml bottles.
Applications
- Small screws and fine-thread fasteners under 1/4″
- Adjustment and calibration screws
- Instrumentation, meters, and electronic assemblies
- Set screws that need periodic reset
- Countersunk and machine screws on light hardware
Key Features
- Low strength – easy removal with hand tools
- Sized for small screws under 1/4 inch
- Anaerobic cure – sets only between metal threads
- Purple color for quick identification of the low-strength grade
- Meets MIL-S-46163A, Type II, Grade M
- Available in bottle sizes for bench and field
- Sets in 5–15 min; reaches full strength in 24 hours
Specifications
| Type | Anaerobic threadlocker, single-component |
| Strength | Low (easy removal with hand tools) |
| Color | Purple |
| Service Temperature | –65°F to +300°F |
| Fixture Time | 5–15 min |
| Full Cure | 24 hours |
| Viscosity | 900–5000 cP |
| Max Gap Fill | 0.010 in |
| Breakaway Torque | 25–70 in-lb |
| Prevailing Torque | 15–60 in-lb |
| Shelf Life | 1 year (minimum) |
| Fastener Size | Small screws under 1/4″ |
| Military Spec | MIL-S-46163A, Type II, Grade M |
| Available Sizes | 10 ml, 50 ml, 250 ml |
Best Used For
- Small and fine-thread screws under 1/4″
- Frequently adjusted or reset screws
- Instrumentation and electronic hardware
- Calibration and metering hardware
FAQ
Is it easy to remove?
Yes. It’s the low-strength grade, so screws back out with standard hand tools.
What size fasteners is it for?
Small screws under 1/4 inch in diameter.
What does the purple color mean?
Purple is the standard color for low-strength threadlockers.
Does it meet a military specification?
Yes – MIL-S-46163A, Type II, Grade M.
Why Contractors Choose This
- The right grade for small hardware that stronger threadlockers would over-lock
- Low-strength, easy-service performance at distributor pricing
- Backed by a recognized military spec (MIL-S-46163A)
- Single-component and fast to apply
- Case pricing that drops as the order grows
- ✓ Meets MIL-S-46163A, Type II, Grade M
- ✓ Formulated for small screws under 1/4″
- ✓ Bulk and case pricing built for shops and contractors
- ✓ Sold and supported by a distribution team with decades in the trade
Buy More. Save More.
Save 10% when you order a full case. Case and volume pricing available on every size – contact us for shop and contractor pricing on multi-case orders.