Vision inspection & sorting machines for fastener manufacturers.
One damaged thread reaching an OEM can cost a fastener plant its rating. Visimaster machines inspect every single bolt, nut and screw at production speed — so defective pieces get sorted out before dispatch, not after a complaint.
Head Damage, Shank Damage, Hex Damage, Head Crack, Thread Dent, Dirt Mark, Thread Crack, Burr, Thread Damage
Other checks: Hole detection, OCR-OCV, Operation Missing, Absence/Presence Verification
Metal Disc
Bolts, screws, ball pins and headed fasteners — dents, cracks, thread damage and 360° surface defects caught at multiple inspection stations.
360° · multi-station
Glass Disc Machine for Bolts Inspection
Screws · Allen Bolts · Flange Bolts · Flat Head Bolts · Hex Bolts, Banjo Bolts
300 PPM · 360° + OCRGlass Disc Machine for Nuts Inspection
Hex Nuts · Flange Nuts · Square nuts · Weld Nuts · Dome Nuts · Nyloc Nuts
300 PPM · thread checks
Nano Glass Disc
Compact table-top glass disc for turned precision parts, fasteners and washers — full dimensional inspection in a bench footprint.
200 PPM · table-top
“The team at Varad Automation is highly supportive and knowledgeable. With their solutions, we have successfully achieved our targets. Our Managing Director had a vision to inspect components just in time, and Varad Automation has turned that vision into reality.”
Rajkumar Dhingra · AK Automatics
Which fastener defects can the machines catch?
The published inspection list for fasteners covers Head Damage, Shank Damage, Hex Damage, Head Crack, Thread Dent, Dirt Mark, Thread Crack, Burr and Thread Damage — plus hole detection, OCR-OCV, operation-missing and presence/absence verification. The exact list for your part is confirmed on a real machine run in the free feasibility check.
How fast can bolts and screws be inspected?
The Glass Disc configurations for bolts and nuts are published at inspection speeds up to 300 PPM. The exact speed for your part and defect list is confirmed in the feasibility report.
How do I find out if my fastener can be inspected?
Courier 50–100 sample parts — including a few defective pieces — to our lab in Bhosari, Pune. Our engineers run them on the actual machine platform and you receive a feasibility report, typically within a week. The check is free. Prefer to start online? Upload a drawing or photo on the Ask AI page and get an engineering answer in minutes.
Will it work on your exact part?
Describe your part to Visi, our AI sales engineer — or courier 50–100 sample parts (including a few defective pieces) to our Bhosari lab for a free feasibility study.
See all machines