Product Quality –

The overriding principle behind every screw machine product manufactured by Richard Manno & Company, whether it’s a precision shoulder screw, dowel pin, captive screw, thumb screw, or from among any of the hundreds of other screw machined varieties available from stock, is that the quality of the part must meet or exceed the acceptance level of our toughest critics – our own inspection team. Our QSLM/QSLD Class 2 certification is a testament to our commitment to quality.

In viewing the various parameters, whether it’s the correct microfinish on a machined surface on a dowel pin or the consistently-precise fit of a threaded length on a precision shoulder screw, our inspectors take their important responsibilities very seriously. For instance, we check the threads not only for gage-fit, but also under high magnification in order to ensure an absence of burrs at the crests. The main concern is to get it right the first time and we all benefit from that kind of vigilance.


Inspection Process –

A minimum of four separate inspections take place for every job that we set up. There’s the first piece inspection, necessary to confirm that the machine setup is correct. Then, we have the machine operator’s verification, with dimensional measurements taken periodically while the job is running. Then, at the end of the run, final inspectors check the lot thoroughly before passing it on to shipping for its last look by the shipping clerks. If there are any secondary modifications to be included, each one adds another layer of inspection to the lot, to ensure that all parameters are met. This applies to everything we manufacture, from commercial dowel pins to fully-certified military and aerospace captive screws and shoulder bolts.


Inspection Equipment –

- Nikon Shadowgraphs
- Height Gages up to 50”
- 2’ by 3’ Bench Surface Plate
- Togosiseiko Hardness Tester
- Pratt and Whitney Roll Snap Gages
- Sunnen Bore Gage (.370 – 1.500 Capacity)
- Etalon Jeweled Indicator Micrometers - Granite Surface Plates
- Portman Optical Comparator
- Depth Gages to 6”
- Johanson-Thrift Gage Blocks
- Surface Tester
- Johnson External Thread Comparator: Meets Requirements of System 22
- Single Element Gaging: Actual Thread Measurements Computerized Printout

Outside inspection processes include lab testing, PPAP analysis and laser sorting. Due to the wide range of possible requirements, charges for these services will vary. Please contact us for further details and requirements.


Certifications –

We offer all levels of certifications for our products, from a standard certificate of conformance to Level 3 PPAP documentation. For anything beyond the standard C of C, we request that the certification requirement be mentioned at the time of quote, so that we are certain of quoting the proper lead time. If certifications are requested after shipment, additional charges may apply.


Standard Certification Charges –

Certificate of Conformance – No Charge
Signed C of C – $15.00 Material Certification – $25.00
Heat Treat Certification – $25.00
Plating Certification – $25.00
Full Certs (includes all of the above, as applicable) – $50.00
Inspection Report – $100.00
Lab Test Report – Charge Available On Request
PPAP – Charge Available On Request Laser Sorting – Charge Available On Request