Parts Lists - Use of the word "off" against Quantity

TPMB4

Quite Involved in Discussions
#1
What is the origin of using the word "off" next to quantity in engineering circles? As in "part x - 2 off". Is this correct? If not a good way of doing this I'm assuming it's acceptable phrasing.

Sorry if this has been asked before but i couldn't find anything in the search function. Not easy to use on my phone.
 
Elsmar Forum Sponsor

somashekar

Staff member
Super Moderator
#2
Re: Parts lists - use of the word "off" against quantity?

Its very typical to use 'Off' in assembly drawings and BoM, when a general part used in the assembly is used at several places., like bolt, nut, washer, lock washer, .. etc.
 

TPMB4

Quite Involved in Discussions
#3
Re: Parts lists - use of the word "off" against quantity?

It's what I've always used but i got asked about it and it got me looking into its origins. Google just comes up with a lot of comments that engineers use it but it is using wrong grammar. More grammar nerds than engineers online it seems!
 
Thread starter Similar threads Forum Replies Date
R Flammability requirements for applied parts as per 60601-1 IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
K Initial capability studies on similar parts APQP and PPAP 7
Evelyn7E The fastest way to get supplier to ship good parts to you Supplier Quality Assurance and other Supplier Issues 10
B Cl. 9.2 - Moving parts - Applicable only to machinery? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
B How to test operator to see if they can catch the defective parts? Manufacturing and Related Processes 6
P Interchangeable/alternative parts in BOM (medical device) Manufacturing and Related Processes 4
T Is handling chemically treated parts safe? RoHS, REACH, ELV, IMDS and Restricted Substances 18
R Select the 1 Supplier based on the Parts Durability from 6 Supplier Samples using Minitab Using Minitab Software 11
aleexander Grounding of metallic accessible parts IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
K 10 parts, 4 operators, 3 replications and each part has 3 location to measure. Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 4
K Unused Service Parts in Newly Manufactured Medical Device? Other US Medical Device Regulations 1
M MSA angle issue - Nylon parts using Aberlink 3D Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 0
I What revalidation is necessary if we change parts in a WFI loop ? Qualification and Validation (including 21 CFR Part 11) 1
Fjalar Spare parts for discontinued MDD compliant class I medical device EU Medical Device Regulations 4
S For Parts Manufacturer Approval (PMA) Is 100% Inspection Required? Federal Aviation Administration (FAA) Standards and Requirements 2
S Defibrillator Protection applicability When using Multiple applied parts IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
F Recording Nonconforming Purchased Parts Nonconformance and Corrective Action 5
D Suggestions for Ishikawa for hyperdetailed customer - plastic molding automotive parts Nonconformance and Corrective Action 9
R Is a FAIR required on parts that we design? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 5
C Packaging Long Parts Manufacturing and Related Processes 3
D Separation of F-type applied part and remaining parts IEC 60601 - Medical Electrical Equipment Safety Standards Series 7
John C. Abnet VDA 6.3 - Question 7.3 - "blocking of parts" VDA Standards - Germany's Automotive Standards 6
I When is necessary to have RoHS declaration on non-electrical parts? REACH and RoHS Conversations 1
Z Rapid audit template for plastic parts manufacturing process Manufacturing and Related Processes 12
C Scrapping on production floor - Setup parts 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 4
G Bad Parts cause Customer line stop IATF 16949 - Automotive Quality Systems Standard 13
G Calibration of "Master Parts" Used as Gauges Calibration Frequency (Interval) 5
P FDA Approved Product Contact Parts ISO 13485:2016 - Medical Device Quality Management Systems 6
M Identifying Applied Parts IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
M Nonconforming parts accepted by operator with intention Human Factors and Ergonomics in Engineering 33
J Mechanical inspection techniques of close tolerance parts Inspection, Prints (Drawings), Testing, Sampling and Related Topics 4
J Sister-company providing parts is only ISO 9001 registered IATF 16949 - Automotive Quality Systems Standard 7
A AS9100D 8.1.4 Prevention of Counterfeit Parts AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 8
C Difficulties getting RoHS/REACH for cheap parts RoHS, REACH, ELV, IMDS and Restricted Substances 1
G Same parts but new customer - What will the auditor ask me? IATF 16949 - Automotive Quality Systems Standard 2
G Need to change KPI we called NC parts (maximum 3%.) to FTQ (first time quality) IATF 16949 - Automotive Quality Systems Standard 4
Q Do you classify applied parts? IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
R Defib-proof applied parts IEC 60601 - Medical Electrical Equipment Safety Standards Series 0
S Earthing of moving parts, designing tips IEC 60601 - Medical Electrical Equipment Safety Standards Series 2
C Quantifying risk in choosing the number of parts, operators and replicates in a GR&R Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 4
Ed Panek Corona Virus impact on Supplier Audits and Received Parts ISO 13485:2016 - Medical Device Quality Management Systems 4
E IEC 60601-1 - Unearthed Medical Device Metal Parts IEC 60601 - Medical Electrical Equipment Safety Standards Series 1
bryan willemot Shipping Aerospace parts without Stress certs Manufacturing and Related Processes 20
H Capability Data for Paint Thickness on Painted Parts Statistical Analysis Tools, Techniques and SPC 10
J SPC - Stamping parts - Small batch size Statistical Analysis Tools, Techniques and SPC 6
D 3 Companies - Medical device parts and substances - Responsibilities EU Medical Device Regulations 4
B Accessible parts per 8.4.2 b) - Touch currents in combination with MOOP or MOPP? IEC 60601 - Medical Electrical Equipment Safety Standards Series 3
J Traceability of component parts - Bolts, screws and washers ISO 13485:2016 - Medical Device Quality Management Systems 3
R Traceability on Unmarked Parts - AS9100 requirements AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 7
CPhelan Best metrics for monitoring low volume (<1000) parts per vendors Supply Chain Security Management Systems 1

Similar threads

Top Bottom